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Fenton pre-treated microfibrillated cellulose evaluated as a strength enhancer in the middle ply of paperboard
AkzoNobel Pulp & Performance Chem, SE-44580 Bohus, Sweden.;Karlstad Univ, Dept Engn & Chem Sci, SE-65188 Karlstad, Sweden..
AkzoNobel Pulp & Performance Chem, SE-44580 Bohus, Sweden..
AkzoNobel Pulp & Performance Chem, SE-44580 Bohus, Sweden.;Mid Sweden Univ, FSCN, SE-85170 Sundsvall, Sweden..
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences. Karlstad Univ, Dept Chem Sci & Engn, S-65188 Karlstad, Sweden..
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2014 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 29, no 4, 732-740 p.Article in journal (Refereed) PublishedText
Abstract [en]

Microfibrillated celluloses (MFCs), produced by various pre-treatments of a fully bleached birch kraft pulp, were evaluated as strength enhancers in test sheets representing the middle ply of paperboard. The furnish consisted of hydrogen peroxide bleached high temperature spruce chemithermomechanical pulp (HT-CTMP), MFC and a retention system containing cationic starch and an anionic silica sol. The MFC was prepared via a mechanical treatment in a colloid mill after pretreatment with Fenton's reagent, monocomponent endoglucanase or acidic hydrogen peroxide. Addition of 5% MFC, produced with Fenton pre-treatment, resulted in improved HT-CTMP properties with respect to increased tensile index (similar to 35%), z-directional strength (similar to 50%), tensile stiffness index (similar to 25%) compared to HT-CTMP test sheets prepared without MFC addition. The strength improvement was linearly correlated to the density of the tests sheet, to the surface area (BET) and to the surface charge of the enzymatic or chemically pre-treated MFCs.

Place, publisher, year, edition, pages
2014. Vol. 29, no 4, 732-740 p.
Keyword [en]
Microfibrillated cellulose, Fenton's reagent, Enzymatic hydrolysis, Tensile strength, Z-directional strength, Bending stiffness index, Bending resistance, Dewatering
National Category
Chemical Engineering
URN: urn:nbn:se:kau:diva-41572ISI: 000346146900020OAI: diva2:923089
Available from: 2016-04-25 Created: 2016-04-11 Last updated: 2016-06-13Bibliographically approved

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Håkansson, HelenaGermgård, Ulf
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