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The effect of Fenton chemistry on the properties of microfibrillated cellulose
AkzoNobel Pulp & Performance Chem, S-44580 Bohus, Sweden.;Karlstad Univ, Dept Chem Sci & Engn, S-65188 Karlstad, Sweden..
AkzoNobel Pulp & Performance Chem, S-44580 Bohus, Sweden..
AkzoNobel Pulp & Performance Chem, S-44580 Bohus, Sweden.;Mid Sweden Univ, FSCN, S-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: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 21, no 3, 1489-1503 p.Article in journal (Refereed) PublishedText
Abstract [en]

A fully bleached birch kraft pulp was treated with acidic hydrogen peroxide in the presence of ferrous ions (Fenton's reagent) and thereafter treated mechanically in a colloid mill to produce a product containing microfibrillated cellulose (MFC). The produced MFC products were chemically and morphologically characterized and compared with MFC products produced without pretreatment as well as with enzymatic hydrolysis. Fenton treatment resulted in an increase in total charge and number of carbonyl groups while the intrinsic viscosity decreased. The Fenton treated pulps were easier to process mechanically i.e. they reached a higher specific surface area at a given mechanical treatment time and the MFC produced had a stable water-fibre suspension for at least 8 weeks compared to enzymatic pretreated pulps and pulps not subjected to any pretreatment.

Place, publisher, year, edition, pages
2014. Vol. 21, no 3, 1489-1503 p.
Keyword [en]
Microfibrillated cellulose, Fenton chemistry, Enzymatic hydrolysis, Carbonyl groups, Carbohydrate composition, Total and surface charge, Suspension stability
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-41526DOI: 10.1007/s10570-014-0243-1ISI: 000336322800036OAI: oai:DiVA.org:kau-41526DiVA: diva2:923132
Available from: 2016-04-25 Created: 2016-04-11 Last updated: 2016-06-13Bibliographically approved

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Hakansson, HelenaGermgård, Ulf
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