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  • 1. Backfolk, K.
    et al.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Peltonen, J.
    Association between a sodium salt of a linear dodecylbenzene sulphonate and a non-ionic fatty alcohol ethoxylate surfactant during film formation of styrene/butadiene latex2006In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2006, 291 (1-3), 38-44Article in journal (Refereed)
  • 2.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Coppel, Ludovic
    Innventia AB, Stockholm, Sweden.
    Andersson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Edström, Per
    Mid Sweden University.
    Characterization and modelling of the effect of calendering on coated polyester film2009In: Advances in Printing and Media Technology: Vol XXXVI, 2009, p. 301-308Conference paper (Refereed)
    Abstract [en]

    Polyester films were coated with a coating colour based on a ground calcium carbonate with narrow particle size distribution. Four different coat weights were produced. The coated sheets were calendered and the samples were exposed to up to twenty nips in the calender at a line load of 300 kN/m at 50°C. The brightness and the thickness were measured after each calendering nip. Reflectometry was used to measure the refractive index and the microroughness of the samples. Calendering lead to a decrease of the Kubelka-Munk scattering coefficient and an increase of the absorption coefficient of the coated transparent films. Taking into account non-uniform surface reflection at the boundaries between media of different refractive indices, a large part of the reflectance decrease due to calendering could be attributed to an increase of the effective refractive index at the coating surface and a decrease of the surface microroughness.

  • 3.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Coppel, Ludovic
    Innventia AB, Stockholm, Sweden.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Edström, Per
    Mid Sweden University.
    Modelling of Brightness Decrease of Coated Cartonboard as an Effect on Calendering: Microroughness and Effective Refractive Index Aspects2010In: TAPPI 11th Advanced Coating Fundamentals Symposium, Munich, Germany, 2010: Symposium Proceedings, Norcross, GA, USA: TAPPI Press, 2010, p. 51-65Conference paper (Refereed)
    Abstract [en]

    Calendering of coated paper leads to a brightness decrease. The mechanism for this is not clear, although it has been discussed in the past. One common explanation is that the porosity of the coating layer decreases and hence scattering. By comparing simulated and measured results this paper shows that modifications of the surface properties account for the brightness decrease of GCC coated substrates with calendering. The effect of a deformable cartonboard substrate is investigated here and compared to a less deformable plastic film substrate. From simulations based on a two-layer Kubelka-Munk model, it is shown that the brightness decrease of the cartonboard due to calendering has a negligible contribution to the brightness decrease of the coated cartonboard. The brightness decrease was similar for coated plastic film and coated cartonboard. The thickness of GCC coated plastic films was not affected by calendering irrespectively of the pigment and latex size distribution. Monte Carlo light scattering simulations, taking into account the measured decrease of surface microroughness and increased effective refractive index, showed that surface modifications accounted for most of the observed brightness decrease of the GCC coated substrate, whereas the bulk scattering and absorption coefficients were not affected by calendering. It is also shown that the scattering coefficient is significantly dependent on the coat weight whereas the physical absorption coefficient is not.

  • 4.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Evaluation of ink penetration in porous coatings2012Conference paper (Refereed)
  • 5.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Flexographic ink-coating interactions: Effects of kaolin clay/GCC blends in coating layersManuscript (preprint) (Other academic)
  • 6.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Flexographic ink-coating interactions: effects of kaolin clay/GCCblends in coating layers2014Conference paper (Refereed)
  • 7.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Flexographic ink-coating interactions: Effects of latex variations in coating layers2016In: TAPPI Journal, ISSN 0734-1415, Vol. 15, no 4, p. 253-262Article in journal (Refereed)
  • 8.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Lestelius, Magnus
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Flexographic Ink-Coating Interactions, Effects of Porous Structure Variation of Coated Paperboard2012Conference paper (Refereed)
  • 9.
    Bohlin, Erik
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Flexographic Ink-Coating Interactions: Effects of Porous Structure Variations of Coated Paperboard2013In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 28, no 4Article in journal (Refereed)
    Abstract [en]

    Ink transfer and ink penetration into a coated surface, and variations thereof, influences the print density, mottling and dot gain, which affects the achievable print quality and visual appearance. The pressure in the printing nip and the porosity of the substrate are conditions and properties that will regulate the amount of ink that penetrates into a porous coating structure. The purpose of this study was to relate print quality aspects to ink penetration of water-based flexographic ink into calcium carbonate based coatings of differently engineered structures. Pilot-coated paper-boards with different coating porosities were printed in a laboratory flexographic printer. Results indicate that ink transfer distribution is strongly affected by the roughness and the porosity of the substrate. A coating layer of broad pigment particle size distribution resulted in a lower print density, compared to coatings of narrowly distributed particle sizes. A structure characterized by larger pore volume and greater dominating pore radius, showed a higher amount of z-directional ink penetration, which was supported by estimating the penetration using a physical model accounting for both capillary- and pressure driven penetration. A coating with narrow particle size distribution also showed a lower dot gain.

  • 10. Breen, Chris
    et al.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Thompson, Simon
    Black, Leon
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Using clays to enhance the barrier properties of sustainable paper coatings2008Conference paper (Other (popular science, discussion, etc.))
  • 11.
    Christophliemk, Hanna
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Ullsten, Henrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Oxygen and water vapor transmission rates of starch-poly(vinyl alcohol) barrier coatings for flexible packaging paper2017In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 113, p. 218-224Article in journal (Refereed)
    Abstract [en]

    Creating efficient water-borne dispersions based mainly on renewable materials for coating of flexible packaging paper was the aim of this study. The effects of an ethylene modified poly(vinyl alcohol) grade and a standard poly(vinyl alcohol) on the oxygen and water vapor barrier performance of corn starch and potato starch coatings was studied. The results showed that a coating composition with a high fraction of a renewable polymer was effective in keeping the oxygen barrier at a technically and commercially applicable level. An ethylene modified poly(vinyl alcohol) grade was found to provide lower oxygen transmission rates at high relative humidity, as compared to a standard poly(vinyl alcohol) grade. The oxygen barrier properties of blends of starch and poly (vinyl alcohol) were similar to that of the pure modified poly(vinyl alcohol) in the range from 0% starch to 60% starch. This was observed with both hydroxypropylated and octenyl succinate modified starch grades. The drying conditions of the mixed starch:poly(vinyl alcohol) coatings were based on drying trials with pure poly (vinyl alcohol) coatings. Drying at moderate temperatures indicated the possibility to slightly decrease water vapor transmission rate by higher drying temperature. Several secondary effects of increased drying temperature such as coating hold-out and formation of defects may also be of importance.

  • 12.
    Christophliemk, Hanna
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Ullsten, Henrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Exploiting the synergies between starch, nanoclay and other additives to enhance the barrier properties of paper; Starch coatings - striking balance between the benefits and the drawbacks2011Conference paper (Other academic)
  • 13.
    Christophliemk, Hanna
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Ullsten, Henrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Starch-poly(vinyl alcohol) barrier coatings for flexible packaging paper and their effects of phase interactions2017In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 111, p. 13-22Article in journal (Refereed)
    Abstract [en]

    Starch and poly(vinyl alcohol) based barrier coatings for flexible packaging papers were studied. Both octenyl succinate modified and hydroxypropylated corn and potato starches were blended with regular and ethylene modified poly(vinyl alcohol) to increase the water vapor barrier properties and enhance the flexibility of the starch coatings, in order to accomplish superior barrier performance. Phase separation between starch and poly (vinyl alcohol) was studied in detail, both in the solution and in dry draw-down coatings on paper. The barrier performance of the coated paper was evaluated with respect to water vapor transmission rate. Conditions for the creation of a thin surface layer consisting of only one of the pure polymers were identified and discussed in terms of phase separation in solution migration of poly(vinyl alcohol) to the uppermost surface layer. The phase separation promoted low water vapor transmission rates also with a rather high fraction of starch in the coatings

  • 14.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Barrier coating2001Conference paper (Other (popular science, discussion, etc.))
  • 15.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Barriärbestrukna förpackningsmaterial2001Conference paper (Other (popular science, discussion, etc.))
  • 16.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Bio-nanocomposites for food packaging applications2011In: Nanocomposites with biodegradable polymers Synthesis, Properties and Future Perspectives / [ed] Vikas Mittal, Oxford: Oxford University Press , 2011, p. 348-367Chapter in book (Refereed)
  • 17.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Bioplastics2016In: Handbook of Thermoplastics: Second Edition / [ed] Olabisi, O., Adewale, K., CRC Press, 2016, 2, p. 835-876Chapter in book (Other academic)
  • 18.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Composite Multilayer Coatings for Improved Barrier Properties of Packaging Board2010In: Composite Laminates: Properties, Performance and Applications / [ed] A. Doughett and P. Asnarez, New York, USA: Nova Science Publishers Inc , 2010, p. 83-119Chapter in book (Refereed)
  • 19.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Examinationsformer för ökad förståelse inom civilingenjörsutbildningen - ett lärarperspektiv2007In: Karlstads universitets pedagogiska tidskrift, 2007, 3(1), 87-111Article in journal (Other academic)
  • 20.
    Johansson, Caisa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Functional barriers against migration for food packaging2011In: Multifunctional and Nanoreinforces Polymers for Food Packaging / [ed] Lagaron, JM, Woodhead Publishing Limited, 2011, p. 316-344Chapter in book (Refereed)
    Abstract [en]

    The function of packaging is to protect the packed food and to maintain its integrity and quality. The package should hinder gain or loss of moisture, prevent microbial contamination and act as a barrier against transfer of oxygen, carbon dioxide and aromatic compounds. Of utmost importance is that the packaging material itself does not promote deteriorative food quality changes or endanger the health of the consumer of the packed food as a consequence of uncontrolled migration of any chemical substances from packaging into food. Recent legislative issues concerning food safety related to migration are summarized. An overview of functional barriers on the market, the sources for and identity of potential migrating substances, and the mechanisms behind migration, as well as of modern analysis techniques, is given. Novel strategies for improvement of functional barriers are discussed. In recent years, increased environmental concern has set the focus on the use of recycled plastics and paper in food packaging, thus enhancing the need for effective functional barriers to prevent contaminants from migrating to food. Future trends in the food packaging market are increased use of biobased polymers, enhanced utilization of nanotechnology for performance improvement and increased use of active or intelligent packaging.

  • 21.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Going through the barrier2012In: Food Science & Technology, ISSN 1475-3324, Vol. 26, no 3, p. 32-34Article, review/survey (Other academic)
  • 22.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Interactions between Polymers in Dispersion Coating and Surface Sizing of Paper and Board2002Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Barrier dispersion coatings are applied to paper or board in order to lower the permeability of the material to liquids and gases. In the present study, the film formation and barrier properties of latices used for coating applications were investigated. The film topography and surface chemical composition of styrene/butyl acrylate latex films were studied by Atomic Force Microscopy, AFM, and Electron Spectroscopy for Chemical Analysis, ESCA, to see the effects of carboxylation and neutralizing agent on polymer interdiffusion. Barrier properties were determined for materials coated on different substrates, particularly the water vapor permeability. Latex dispersions were dialyzed in order to evaluate the effect of purity on film properties.



    Different three-ply base papers were coated with a pre-metering roll coater on a pilot scale, and the effects of drying conditions and soft calendering on the coating properties were studied. Heat sealability, barrier properties and blocking tendency of the coated material were studied.



    Surfactant migration in annealed films was confirmed with both AFM and ESCA and was taken to be a measure of polymer interdiffusion. The results showed that interdiffusion was retarded in carboxylated latex films and that this process was further slowed down when sodium hydroxide was used as neutralizing agent. Drying of the films at temperatures above Tg of the rigid outermost shell was required to achieve interdiffusion in carboxylated films. Non-carboxylated dispersions formed smooth films at the temperatures expected from their bulk Tg values. Dialysis removed excess amounts of electrolytes and surfactants and gave more densely packed films with a smoother surface topography.



    The lowest water vapor permeability was exhibited by carboxylated latex films, presumably because of the formation of a rigid polymer network with a low free volume available for water diffusion, combined with lower surfactant migration. Surfactant enrichment on the coated surface had a negative effect on the heat sealability and gave rise to an increased blocking tendency.



    The distribution of hydrophobic sizing agent and starch in surface-sized porous materials was studied by microscopy and ESCA. The degree of penetration of starch could be controlled by achieving a weak flocculation between the components through regulation of the pH and salt concentration. The results indicated that the sizing agent remained on the substrate surface, i.e. simultaneous penetration of the two components did not occur.

  • 23.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Modifierad stärkelse som barriärmaterial2007Conference paper (Other (popular science, discussion, etc.))
  • 24.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    New ways to enhance the functionality of paperboard by surface treatment - a review2008In: PACKAGING TECHNOLOGY AND SCIENCE 2008, 21(6): 339-373Article in journal (Other academic)
  • 25.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Polymer Interdiffusion in Dispersion Coatings and its Relation to Barrier Properties2001Licentiate thesis, monograph (Other academic)
  • 26.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Renewable packaging materials2005Conference paper (Other (popular science, discussion, etc.))
  • 27.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Uniform and local application of functional coatings2006Conference paper (Other (popular science, discussion, etc.))
  • 28.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Upplevelser av examinationsformer - könsskillnader bland civilingenjörsstudenter2008In: Karlstads universitets pedagogiska tidskrift, 2008, 4(1), 124-138Article in journal (Other academic)
  • 29.
    Johansson, Caisa
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Water vapor permeability of barrier dispersion coatings2001Conference paper (Other (popular science, discussion, etc.))
  • 30.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Backfolk, Kaj
    Interdiffusion in carboxylated styrene/buyl acrylate latex films studied by topographic and thermal analysis2008In: Progress in Organic Coatings, 2008, 63, 63-71Article in journal (Refereed)
  • 31.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Bohlin, Erik
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Surface characterization and model verification2009Conference paper (Other (popular science, discussion, etc.))
  • 32.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Bohlin, Erik
    Coppel, Ludovic
    Edström, Per
    Calendering of coated polyester film - characterization and modeling2010Conference paper (Other (popular science, discussion, etc.))
  • 33.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Bohlin, Erik
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Coppel, Ludovic
    Edström, Per
    Modelling of coating brightness: Impact of micro-roughness and effective refractive index2011Conference paper (Other (popular science, discussion, etc.))
  • 34.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Bohlin, Erik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Impact of coating composition and structure on print quality of flexographic printed paperboard2016In: 14th TAPPI Advanced coating symposium proceedings, Peachtree Corners, GA: TAPPI Press, 2016, p. 14-17Conference paper (Other academic)
  • 35.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Bras, Julien
    France.
    Mondragon, Inaki
    Spain.
    Nechita, Petronela
    Romania.
    Plackett, David
    Danmark.
    Simon, Peter
    Slovakia.
    Gregor Svetec, Diana
    Slovenia.
    Virtanen, Sanna
    Finland.
    Giacinti Baschetti, Marco
    Italy.
    Breen, Chris
    UK.
    Clegg, Fransic
    UK.
    Aucejo, Susana
    Spain.
    Renewable fibers and bio-based materials for packaging applications-a reveiw of recent developments2012In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 7, no 2, p. 2506-2552Article, review/survey (Refereed)
  • 36.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Clegg, Francis
    Materials and Engineering Research Institute, Sheffield Hallam University, Sheffield, United Kingdom.
    Effect of clay type on dispersion and barrier properties of hydrophobically modified poly(vinyl alcohol)-bentonite nanocomposites2015In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 132, no 28, article id 42229Article in journal (Refereed)
    Abstract [en]

    The oxygen and water vapor permeability at high relative humidity was studied for composite films formed by incorporation of three different bentonites (MMT) into an ethylene-modified, water-soluble poly(vinyl alcohol), EPVOH. The oxygen permeability decreased linearly with an increased addition of hydrophilic MMTs. X-ray diffraction and Fourier transform infrared spectroscopy suggested a homogeneous distribution in the thickness direction with disordered and probably exfoliated structures for hydrophilic MMTs. In contrast, organophilic modified clay showed an intercalated structure with the clay preferentially located at the lower film surface, a combination which was however efficient in reducing the water vapor- and oxygen permeabilities at low addition levels. Composite films of EPVOH and Na+-exchanged MMT resulted in high resistance to dissolution in water, which was ascribed to strong interactions between the components resulting from matching polarities. Annealing the films at 120 degrees C resulted in enhanced resistance to water dissolution and a further reduction in oxygen permeability.

  • 37.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Clegg, Francis
    Sheffield Hallam University.
    Hydrophobically modified poly (vinyl alcohol) and bentonite nanocomposites thereof: Barrier, mechanical, and aesthetic properties2015In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 132, no 13, p. 41737-Article in journal (Refereed)
    Abstract [en]

    Composite films were formed by incorporating three different bentonites into an ethylene modified, water-soluble poly(vinyl alcohol), EPVOH. The interaction of EPVOH with both hydrophilic and hydrophobic bentonites was investigated. EPVOH provided lower water vapor and oxygen transmission rates compared to a conventional PVOH grade when exposed at high relative humidities (70–90% RH). EPVOH films which exhibited oxygen barrier properties comparable to that of a biaxially oriented PET packaging film at 80% RH were produced. High compatibility between EPVOH and hydrophilic bentonites provided an even distribution of clay platelets in the composites. A strong increase in Young's modulus with increased addition of any of the three bentonites was found. At low addition levels the hydrophobic bentonite proved to be effective in terms of maintaining high elongation at break, high transparency and high gloss

  • 38.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Ernstsson, M.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier Properties and Heat Sealability/Failure Mechanisms of Dispersion-Coated Paperboard2002In: Packag.Technol.Sci.,15(4),209-224(2002)Article in journal (Refereed)
  • 39.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Ernstsson, Marie
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and heat sealing properties of dispersion coated board2002Conference paper (Other (popular science, discussion, etc.))
  • 40.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Ernstsson, Marie
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and heat sealing properties of dispersion coated board2002Conference paper (Other (popular science, discussion, etc.))
  • 41.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Ernstsson, Marie
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier and heat sealing properties of dispersion coated board2002Conference paper (Other (popular science, discussion, etc.))
  • 42.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Johnson, Johanna
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Photopolymer printing plates: Changes in performance and properties2011In: Flexo & Gravure International, Vol. 17, no 1, p. 6-8Article in journal (Other academic)
  • 43.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Jonhed, Anna
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Composition and film properties of temperature responsive, hydrophobically modified potatio starch2008In: Starch: international journal for the investigation, processing and use of carbohydrates and their derivatives, ISSN 0038-9056, Vol. 60, no 10, p. 539-550Article in journal (Refereed)
  • 44.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Barrier dispersion coatings in food packaging2001Conference paper (Other (popular science, discussion, etc.))
  • 45.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Controlled penetration of starch and hydrophobic sizing agent in surface sizing of porous materials2006In: Appita Journal, 59(3), 207-212 (2006)Article in journal (Refereed)
  • 46.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Heat sealability and water vapor permeability of barrier dispersion coatings2002Conference paper (Refereed)
  • 47.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Heat sealability and water vapor permeability of barrier dispersion coatings2002In: TAPPI 2002 Coating Conference, TAPPI Press, Atlanta, USA, pp. 383-401 (2002), 2002Chapter in book (Refereed)
  • 48.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Materials Science.
    Modified Starches for Barrier Coatings2005Conference paper (Other (popular science, discussion, etc.))
  • 49.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Renewable barrier coatings - multilayer concepts2008Conference paper (Other (popular science, discussion, etc.))
  • 50.
    Johansson, Caisa
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Järnström, Lars
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Breen, Chris
    Black, Leon
    Thompson, Simon
    New aspects on the use of clays in barrier coatings2008In: PTS Workshop Innovative Packaging / [ed] M. Kleebauer, R. Sangl, München: PTS , 2008Conference paper (Other (popular science, discussion, etc.))
12 1 - 50 of 78
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