Improved Reactivity and Derivatization of Cellulose after Pre-Hydrolysis with Commercial Enzymes
Year of publication
2019
Authors
Willberg-Keyriläinen, Pia; Ropponen, Jarmo; Lahtinen, Manu; Pere, Jaakko
Abstract
Reactivity is an important parameter when considering the chemical modification or dissolution of cellulose. Different pretreatment methods affect cellulose reactivity by decreasing its degree of polymerization (DP) and crystallinity. In this study, the molar mass of cellulose was decreased via enzymatic pretreatment. Three commercial endoglucanase-rich products were tested. The target was to reduce the viscosity of the pulp to below 200 mL/g and, thus, increase the reactivity of the cellulose. For comparison, cellulose was also pretreated with ozone, and the effects of each pretreatment method on crystallinity and monosaccharide composition of the resulting pulps were investigated. Both enzymatically treated and ozone-treated pulps were esterified using homogeneous and heterogeneous methods, and the degrees of substitution for these treated pulps were much higher than the esters when the untreated pulp was used. Cellulose esters from the pretreated pulps formed films with good mechanical properties by solvent casting.
Show moreOrganizations and authors
Publication type
Publication format
Article
Parent publication type
Journal
Article type
Original article
Audience
ScientificPeer-reviewed
Peer-ReviewedMINEDU's publication type classification code
A1 Journal article (refereed), original researchPublication channel information
Journal
Volume
14
Issue
1
Pages
561-574
ISSN
Publication forum
Publication forum level
1
Open access
Open access in the publisher’s service
Yes
Open access of publication channel
Fully open publication channel
Self-archived
Yes
Article processing fee (EUR)
1050
Year of payment for the open publication fee
2019
Other information
Fields of science
Chemical sciences; Chemical engineering; Materials engineering
Keywords
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Internationality of the publisher
International
Language
English
International co-publication
No
Co-publication with a company
No
DOI
10.15376/biores.14.1.561-574
The publication is included in the Ministry of Education and Culture’s Publication data collection
Yes