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  • 201.
    Järnström, Lars
    et al.
    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.
    Yano, S.
    Rigdahl, M.
    A Viscometric Study of the Interaction between Slightly Hydrophobic Starch and Polystyrene Particles1994In: Ann. Trans. Nordic Rheol. Soc., 2, 76 (1994), 1994Chapter in book (Other academic)
  • 202.
    Karlsson, Hanna
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Beghello, Luciano
    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 (from 2013), Paper Surface Centre.
    Nilsson, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Stolpe, Lennart
    Karlstad University, Faculty of Technology and Science.
    Abaca as a reinforcement fibre for softwood pulp2007In: TAPPI Journal, ISSN 0734-1415, Vol. 6, no 10, p. 25-32Article in journal (Refereed)
  • 203. Karlsson, Hanna
    et al.
    Stolpe, Lennart
    Beghello, Luciano
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Comparison of strength properties in stratified and mixed paper2008Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Research has been undertaken with the aim of displacing the tensile-tear relationship towards higher strength values. Three commercial pulps were refined in an Escher-Wyss conical refiner. A softwood sulphate pulp was refined to three different levels of dewatering resistance, while a southern pine pulp and an abaca pulp were refined separately to a dewatering resistance of 17SR. The amount of fines in these two pulps was reduced by fractionation on a bow screen. Two-layer laboratory sheet were produced in a multilayer handsheet former and compared with single-layer sheets made from an homogeneous mixture of the two pulps, either softwood plus southern pine or softwood plus abaca. Analysis revealed that when increasing the degree of refining for the softwood pulp, the tensile index for the stratified sheets was increased and reached a constant level at 27.5 SR. For the mixed sheets, the tensile index increased further with increased refining. While the tear index remained at a fairly constant level for the stratified sheets, it decreased for the mixed sheets with increased degree of refining. No effect of the stratification was observed for the sheets consisting of softwood and southern pine. It has been shown that by placing a reinforcement pulp of considerably higher tearing resistance potential than the bulk pulp in a separate layer instead of homogeneously mixing the pulps, the tensile index of the sheet can be increased by increased refining of the bulk pulp with maintained tear index

  • 204. Kifetew, G
    et al.
    Lindberg, H
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    The tensile failure phenomena on microtomed isolated and combined early- and latewood layers loaded in wet condition1996Other (Other (popular science, discussion, etc.))
  • 205. Kifetew, G
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Berglund, L A
    Lindberg, H
    Effects of drying on wood fracture surfaces from specimens tested in wet condition1998In: Wood Sci and Technology 32 1998 pp 83-94Article in journal (Refereed)
  • 206. Kifetew, Girma
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Berglund, L A
    Lindberg, H
    The effect of drying on wood fracture surfaces from specimens tested in wet condition1998In: Wood Science and Technology 32 1998 pp 83-94Article in journal (Refereed)
  • 207. Kjellgren, Henrik
    et al.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Influence of base paper on the barrier properties of chitosan-coated papers2006In: Nordic Pulp and Paper Research Journal 21 (5) pp 685-689Article in journal (Refereed)
    Abstract [en]

    A kraft paper and three greaseproof papers with different porosities were coated with chitosan to see whether the cheaper kraft paper can be used as a base paper for this coating and whether the final coated paper meets the demand for a low oxygen transmission rate. The coating was performed on a bench scale and two coat weights were applied: 3.4 and 6.0 g/m2. Besides the oxygen transmission rate, the coated material was also tested with respect to air permeance, grease resistance and water vapour transmission rate. The results showed that the coated kraft papers did not meet the demand for a low oxygen transmission rate. A lower oxygen transmission rate was obtained on the greaseproof paper with the lowest porosity, where the coating stayed on the surface and formed a continuous film without cracks. The chitosan coating gave a high grease resistance on the two densest greaseproof papers. Chitosan provided no barrier against water vapour transmission

  • 208. Kjellgren, Henrik
    et al.
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    The relationship between energy requirements and barrier properties in the production of greaseproof paper2005In: Tappi Journal (2005), vol. 4, no 8, pp7-11Article in journal (Refereed)
    Abstract [en]

    A full-scale mill trial surveyed the energy required to produce greaseproof paper. The furnishes studied were a 100% sulfite pulp and a 50/50 sulfite/sulfate pulp, refined to two freeness levels. The papers produced were then calendered at two line-loads using a soft-nip laboratory calender and tested with respect to air permeability, water vapor transmission rate, grease resistance, tear strength, and tensile strength. The least energy-demanding (beating + drying) process was that used to produce the paper from 100% sulfite pulp of low freeness. This paper exhibited approximately the same water vapor transmission rate and grease resistance as the paper made from high freeness 100% sulfite pulp. The papers produced from 50/50 sulfite/sulfate furnish exhibited poorer barrier properties. The mechanical properties of all the papers produced satisfied the specifications for standard greaseproof paper. Beating improved the barrier properties, but required additional energy. Results showed that the same or better barrier properties can be achieved with calendering or surface coating, with lower energy input. We also found that the furnish composition and beating and the calendering affected air permeability in different ways. The former affected both the pore volume fraction and the pore dimensions, while the latter mainly affected the pore volume fraction

  • 209. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    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 and Surface Properties of Chitosan Coated Greaseproof Paper2005Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Greaseproof papers with different air permeances were coated with chitosan, both on a bench scale and on a pilot scale to study the conditions necessary to obtain a packaging material with good oxygen barrier and high grease resistance. The results showed that an oxygen transmission rate in the same range as that of poly(ethylene terephatalate) was obtained at coat weights exceeding 5 g/m². High grease resistance values were also obtained at this coat weight while water resistance was slightly deteriorated due to the hygroscopic character of chitosan. However, that coat weight could only be achieved on papers coated on a bench scale. On a pilot scale, the maximum coat weight was 0.2 g/m² because the solids content of the coating solution used was limited to 1.0 wt%. The coating on a pilot scale was performed using the metered size press technique. To increase the coat weight, the solids content of the solution must be increased considerably. A coating technique which yields higher coat weights might also be necessary.

  • 210. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    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 and Surface Properties of Chitosan Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Greaseproof papers of different air permeance (AP) were coated with chitosan, both on a bench scale and a pilot scale to study the conditions to obtain a packaging material with low oxygen permeability (OP) and high grease resistance. The results showed that excellent OP, in the same range as for PETP poly(polyethylene terphatalate), was obtained at coat weights exceeding 5 g/m². Also, at this coat weight excellent grease resistance were obtained. On the other hand, the coated papers did not yield any barrier against water. However, that coat weight could only be obtained on papers coated on a bench scale. On a pilot scale the maximum coat weight was 0.2 g/m². That low coat weight was due to the low solids of the coating solution used which was only 1.0%. The coating on a pilot scale was performed using metered size press technique. To increase the coat weight the solids of the solution must be increased to approximately 20%. This presupposes a considerably lower molecular mass of the chitosan than that of the product used in this study. A coating technique which allows higher coat weights might also be necessary

  • 211. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    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 and Surface Properties of Chitosan Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
  • 212. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    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 and Surface Properties of Chitosan-Coated Greaseproof Paper2006In: Carbohydrate Polymers, 65(4) 453-460 (2006)Article in journal (Refereed)
  • 213. Kjellgren, Henrik
    et al.
    Gällstedt, M.
    Engström, Gunnar
    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 and Surface Properties of Chitosan-Coated Greaseproof Paper2003Conference paper (Other (popular science, discussion, etc.))
  • 214.
    Korin, Christer
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Fracture behavious of adhesive Joints in carton boarc2007Licentiate thesis, monograph (Other academic)
  • 215.
    Korin, Christer
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Hallbäck, Nils
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Junghans, R
    Failure Modes of Adhesively Joined Carton Board2008In: Journal of Adhesion Science and Technology, 2008Article in journal (Refereed)
  • 216.
    Korin, Christer
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Lestelius, Magnus
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Tryding, J
    Hallbäck, Nils
    Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Y-peel Characterization of Adhessively-bonded Carton Board an objective Method2007In: Journal of Adhesion Science and Technology 21 2007 (2) 197-210Article in journal (Refereed)
  • 217. Kotik, Nikolai
    et al.
    Lestelius, Magnus
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.
    Shestopalov, Youri
    Modelling and Simulation of the Printing Plate-Contact System2006Conference paper (Refereed)
  • 218. Kotik, Ouliana
    et al.
    Ljungqvist, Carl-Henrik
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Effect of the strain to failure distribution of pulp fibres on tensile strength of paper2005In: Appita J., 58(4) pp. 288 –292 (2005)Article in journal (Refereed)
  • 219. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Modeling offibre bridging in delamination of board2004Conference paper (Refereed)
  • 220. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Simulation of Paper Failure ' a Micromechanical Model for Localization of the Fracture Process Zone2005In: Appita J., 58(6) pp. 459–461, 469 (2005)Article in journal (Refereed)
  • 221. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Strain to failure properties of pulp and the influence on the mechanical behaviour of paper2002Other (Other (popular science, discussion, etc.))
  • 222. Kotik, Ouliana
    et al.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Ljungqvist, Carl-Henrik
    The strain to failure properties of pulp fibres and its influence on the fracture zone - michromechanical approach2003Other (Other (popular science, discussion, etc.))
  • 223. Kvarnlöf, Niklas
    et al.
    Germgård, Ulf
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Söderlund, Carl-Axel
    Optimization of the Enzymatic Activation of a Dissolving Pulp Prior to Viscose Manufacture2007In: Tappi Journal, Vol. 6(2007)6,14-19Article in journal (Refereed)
  • 224. Kvarnlöf, Niklas
    et al.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Söderlund, Carl-Axel
    Germgård, Ulf
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Improved cellulose reactivity in the viscose process2007Conference paper (Other (popular science, discussion, etc.))
  • 225. Kvarnlöf, Niklas
    et al.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Söderlund, Carl-Axel
    Germgård, Ulf
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Modification of the Viscose Process to Suit the Use of Dissolving Pulps Pre-treated with Enzyme2008In: Paperi ja Puu, Vol. 90(2008)4,50-55Article in journal (Refereed)
  • 226. Kvarnlöf, Niklas
    et al.
    Söderlund, Carl-Axel
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Germgård, Ulf
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Enzymatic Treatment to Increase the Reactivity of a Dissolving Pulp for Viscose Preparation2006In: Appita Journal, Vol. 59(2006)3,242-246Article in journal (Refereed)
  • 227. Larsson, Linda
    et al.
    Sjödahl, L.
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Microscopic 3-D Displacement Field Measurements using Digital Speckle Photography2004In: Optics and Lasers in Engineering, 41, 767-777 (2004)Article in journal (Refereed)
    Abstract [en]

    A technique to measure object shape and 3-D displacement fields in micro-scale is offered by microscopic stereo digital speckle photography. The displacement of the random features that are often present on many engineering surfaces when viewed in a microscope is measured with the system, using image correlation. In this paper the equipment, physical model and calibration routines are described. The technique can be applied for sub-mm sized objects of arbitrary shape for small deformation fields. As a verifying experiment, an in-plane rotation of a flat calibration plate is presented. The expected in-plane errors are shown to be less than 0.1 ?m and the corresponding out-of-plane errors about three times larger. As a pilot experiment, micro-structural paper expansion is studied, when exposed to humidity. The scaling properties of the microscope as well as the sampling criteria and reliability of the system are discussed in detail

  • 228.
    Larsson, Mikael
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Vidal, D
    Zou, X
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Impact of calendering on coating structures2007In: NORDIC PULP AND PAPER RESEARCH JOURNAL 22(2): 267-274Article in journal (Refereed)
  • 229.
    Larsson, Mikael
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Vidal, D
    Zou, X
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Paper coating properties as affected by pigment blendning and calendering study2007In: TAPPI JOURNAL 6(8): 16-22Article in journal (Refereed)
  • 230.
    Larsson, Mikael
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
    Vidal, David
    Engström, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Lepoutre, Pierre
    Zou, Xuejun
    Paper Coating Properties as Affected by Pigment Blending and Calendering: An Experimental Study2005Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    Many end-use properties of coated papers can be improved by optimizing coating formula-tions, more specifically by selecting and/or blending different types of pigments and binders. Although clay and GCC, with very different particle shapes, are known to create different coating structure, it is not well understood how and why blending these pigments affects the micro-structure. In addition, since most of the coated papers are subjected to calendering, it is also important to know to which extent the structures created by pigment blending are compressed by calendering. The aim of this work was, therefore, to gain insights into how and why pigment blending affects coating pore and surface structure, before and after cal-endering. Coating colours with different blending ratios of GCC and clay were prepared with a constant level of binder and co-binder. The coatings (30 g/m2) were then applied on plastic films and calendered using a paper sheet backing beneath to account for the part of com-pression absorbed by the base paper. Mercury porosimetry was used to characterize the pore structure of the coatings, while an AFM and an interference microscope were used to characterize the surface structure at a pigment size level. The results obtained from these techniques were also compared with and complemented by measurements of gloss and op-tical properties. The results showed that synergy occurs for various coating properties when blending GCC and clay. For example, the pore volume and pore size reached a maximum value around 70% clay and 30% GCC. This confirms the predictions obtained from particle packing simulation. Synergistic effect was also observed on light scattering which is con-trolled by the coating pore structure. However, no synergy was observed for smoothness and gloss. The gloss actually reached a minimum at low clay content and this was attributed to disordering of GCC structure by clay plates. It was found that calendering significantly compressed the coating layers (up to 45% decrease in pore volume), and some of the syn-ergies created by the blending were lost after calendering. Although the pure clay coating was twice more compressed by the calendering than the pure GCC coating, the blending of clay and GCC at a wide range of ratios showed a similar extent of compression. A mecha-nism is proposed to explain the observed synergies by blending and the compression caused by calendering

  • 231. Larsson, S.
    et al.
    Cassland, P.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Nilvebrant, N.-O.
    Treatment of pulp and paper industry process waters with oxalate oxidase: compounds interfering with the activity2003In: Application of Enzymes to Lignocellulosics, Mansfield S.D. and Saddler J.N. (eds.), ACS Symposium Series 855, American Chemical Society, Washington DC, (2003) pp. 81-92, 2003Chapter in book (Other academic)
  • 232.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013), Paper Surface Centre.
    Dahlström, Margareta
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication (from 2013).
    Multidisciplinary Transition to a Sustainable Bioeconomy –: the Case of The Paper Province 2.02015Conference paper (Other academic)
  • 233.
    Lestelius, Magnus
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Engquist, I.
    Tengvall, P.
    Chaudhury, M. K.
    Liedberg, B.
    Order/Disorder Gradients of n-Alkanethiols on Gold1999In: Colloids and Surfaces B: Biointerfaces, Vol. vol 15, p. 57-70Article in journal (Refereed)
  • 234.
    Lestelius, Magnus
    et al.
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    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.
    Montibon, Elson
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, Paper Surface Centre.
    Preparation of Electroconductive Paper by Deposition of Conducting Polymers2010Conference paper (Other (popular science, discussion, etc.))
  • 235.
    Lestelius, Magnus
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Liedberg, B.
    Lundström, I.
    Tengvall, P.
    In Vitro Plasma Protein Adsorption and Kallikrein Formation on 3-Mercaptopropionic Acid, L-Cysteine and Glutathione Immobilized onto Gold1994In: Journal of Biomedical Materials Research, Vol. vol 28, p. 871-880Article in journal (Refereed)
  • 236.
    Lestelius, Magnus
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Liedberg, B.
    Tengvall, P.
    In Vitro Plasma Protein Adsorption on -Functionalized Alkanethiolate Self-Assembled Monolayers1997In: Langmuir, Vol. vol 13, p. 5900-5908Article in journal (Refereed)
  • 237.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre.
    McCallion, Éamonn
    Karlstad University.
    Möjligheter för forskning inom flexografi2013Conference paper (Other (popular science, discussion, etc.))
  • 238.
    Lestelius, Magnus
    et al.
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Montibon, Elson
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, 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.
    Characterization of poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT:PSS) adsorption on cellulosic materials2009Conference paper (Other (popular science, discussion, etc.))
  • 239.
    Lestelius, Magnus
    et al.
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Montibon, Elson
    Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Technology and Science, 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.
    Modification of Paper into Electroconductive Material2010Conference paper (Other (popular science, discussion, etc.))
  • 240.
    Lestelius, Magnus
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013), Paper Surface Centre.
    Nyflött, Åsa
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Moons, Ellen
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013).
    Järnström, Lars
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013), Paper Surface Centre.
    Carlsson, Gunilla
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Bonnerup, Chris
    Govindarajan, Venkatesh
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).
    Oxygen permeabilityand economic-environmental impact studies of some polyvinyl alcohol dispersionbarrier coatings for packaging applications2017Conference paper (Other academic)
    Abstract [en]

    Purposes of employing barrier coatings in packaging, and in particular food packaging, can be to increase the shelf life, preserve colour, odour, and taste, and to protect from a harmful environment in general. Barrier coatings can thus help to reduce food waste along the value chain until end use. Including both materials choice for packaging and the possible fates of the used package, even further steps to provide greater knowledge for decisions on choices of packaging solutions. To that end, we have conducted several experimental and transport modeling studies on oxygen barrier coatings performance. The coating system of choice    has been dispersion coatings of poly vinyl alcohol (PVOH), with additions of kaolin. Physical and chemical features of the coatings were characterized to obtain information on polymer crystallinity, free volume and filler orientation as these characteristics are influential to the oxygen mass transport performance. In turn, the oxygen mass transport was also measured, both in steady state and dynamically. In so doing, we obtained information    useful for developing a general model to describe the oxygen permeability taking into account the physical and chemical features, described above, of the coating layer. Attempts on describing the interdependence and impact, for instance between crystalline and amorphous polymer regions and moisture, was added to the model. The model showed agreement to experimental data for PVOH-kaolin coating in this particular case. However, the basic permeability model has been applied to  many different polymers.

    To further explore the potential of these types of coating, which are technically possible to    produce in paperboard production, an economic-environmental impact comparison to other existing material solutions was made. Four barrier material alternatives – starch, polyethylene, ethyl vinyl alcohol (chosen as an alternative for PVOH, where data was difficult to obtain) and kaolin, and latex and kaolin, were analyzed with respect to cost and global warming potential. Weighting and comparing cost to environmental aspect, weighting    factors based on interviews with experts in the packaging value chain, starch emerges as the most sustainable alternative. However, previous coating and mass transport studies also shows how these renewable materials require some further technical development to be competitive.

    The mass transport model can serve as a tool for customizing barrier coatings and to predict the barrier performance, as permeability is obtained and thus shelf-life estimation is    possible. The overall concept, the combination of assessment of structural performance and the environmental studies, can be employed to find sustainable food packaging solutions.

  • 241.
    Lestelius, Magnus
    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. Karlstad University, Faculty of Technology and Science, Materials Science.
    Tengvall, P.
    Lundström, I.
    Features of Plasma Protein Adsorption onto Glutathione Immobilized on Gold1995In: Journal of Colloid and Interface Science, Vol. vol 171, p. 533-535Article in journal (Refereed)
  • 242.
    Lindblad, Mia
    et al.
    Göteborgs Universitet.
    Lestelius, Magnus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre. Linköpings universitet.
    Johansson, A
    Göteborgs Universitet.
    Tengvall, Pentti
    Linköpings universitet.
    Thomsen, Peter
    Göteborgs Universitet.
    Cell and soft tissue interactions with methyl- and hydroxyl-terminated alkane thiols on gold surfaces1997In: Biomaterials, ISSN 0142-9612, E-ISSN 1878-5905, ISSN 0142-9612, Vol. 18, no 15, p. 1059-1068Article in journal (Refereed)
  • 243. Lindskog, P
    et al.
    Barbier, Christophe
    Karlstad University, Faculty of Technology and Science, Materials Science. 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, Department of Mechanical and Materials Engineering.
    Jelagin, D
    Larsson, P.L.
    Optimization as a tool for characterization of advanced constitutive models describing powder compaction2007Conference paper (Refereed)
    Abstract [en]

    The applicability of optimization procedures used in combination with advanced constitutive models, describing dry pressing powder compaction, is investigated by aid of standard finite ele- ment and optimization commercial packages. It is found that, at fairly general conditions, this can be expected to be a very advantageous approach at material characterization

  • 244. Ljungqvist, Carl-Henrik
    et al.
    Lyng, Reidar
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Evaluation of PFI beating on the strain to failure of spruce fibres using single fibre fragmentation2005Other (Other (popular science, discussion, etc.))
  • 245. Ljungqvist, Carl-Henrik
    et al.
    Lyng, Reidar
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Influence of fibre damage in latewood spruce tracheids on strain to failure of wood fibres determined be Weiull modeling2004In: Nordic Pulp and Paper Research Journal, 19 2004 pp 164-169Article in journal (Refereed)
  • 246. Ljungqvist, Carl-Henrik
    et al.
    Lyng, Reidar
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Influence of observable damage on mature latewood spruce fiber properties2003Conference paper (Refereed)
  • 247. Ljungqvist, Carl-Henrik
    et al.
    Lyng, Reidar
    Thuvander, Fredrik
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science. Karlstad University, Faculty of Technology and Science, Department of Mechanical and Materials Engineering.
    Measuring the strain to failure for wood fibres - influence of fibre wall damage2003Other (Other (popular science, discussion, etc.))
  • 248. Martín, C.
    et al.
    Almazán, O.
    Marcet, M.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    A study of three strategies for improving the fermentability of sugarcane bagasse hydrolysates for fuel ethanol production2007In: Int. Sugar J. (2007) 109, 33-39Article in journal (Refereed)
  • 249. Martín, C.
    et al.
    Fernández, T.
    García, R.
    Carrillo, E.
    Marcet, M.
    Galbe, M.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Chemical composition of tobacco stalk hydrolysates and ethanolic fermentation by Saccharomyces cerevisiae2002In: World J. Microb. Biotechnol. (2002) 18, 857-862Article in journal (Refereed)
  • 250. Martín, C.
    et al.
    Galbe, M.
    Nilvebrant, N.O.
    Jönsson, Leif J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Paper Surface Centre.
    Comparison of the fermentability of enzymatic hydrolysates of sugarcane bagasse pretreated by steam explosion using different impregnating agents2002In: Appl. Biochem. Biotechnol. (2002) 98-100, 699-716Article in journal (Refereed)
234567 201 - 250 of 331
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