The effect of Fenton chemistry on the properties of microfibrillated cellulose
2014 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 21, no 3, 1489-1503 p.Article in journal (Refereed) Published
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.
Microfibrillated cellulose, Fenton chemistry, Enzymatic hydrolysis, Carbonyl groups, Carbohydrate composition, Total and surface charge, Suspension stability
IdentifiersURN: urn:nbn:se:kau:diva-41526DOI: 10.1007/s10570-014-0243-1ISI: 000336322800036OAI: oai:DiVA.org:kau-41526DiVA: diva2:923132