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A model system to study esterification reactions in cellulosic or lignocellulosic material
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-7711-9267
2007 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 33, no 4, p. 177-183Article in journal (Refereed) Published
Abstract [en]

The formation of natural ester cross-linkages in cellulosic or lignocellulosic composite materials during drying and heating is of interest for the production of paper and of wood composite boards and in giving cotton materials improved characteristics. A model system has been developed to study quantitatively the esterification of cellulosic material during drying and heating when solid-state conditions can be said to predominate. In the experiments, hexanoic acid and 3-hydroxybutyric acid were added to ordinary filter paper. Moisture content was adjusted, and samples were heated to temperatures ranging from 85 degrees C to 180 degrees C for between 15 and 45 minutes. Quantitative analysis of ester,formation, in this case between the monocarboxylic acids and the cellulose's hydroxyl groups, was performed using aminolysis/gas chromatography. The 3-hydroxybutyric acid was surprising v effective in ester formation. The results indicate that direct esterification of monocarboxylic acid can be an important reaction in lignocellulosic material at elevated temperatures.

Place, publisher, year, edition, pages
2007. Vol. 33, no 4, p. 177-183
National Category
Bio Materials
Research subject
Wood Physics
Identifiers
URN: urn:nbn:se:ltu:diva-14383Local ID: dbc09e30-0a2e-11dd-ae49-000ea68e967bOAI: oai:DiVA.org:ltu-14383DiVA, id: diva2:987338
Note
Validerad; 2007; 20080414 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Pantze, AnnaKarlsson, OlovWestermark, Ulla

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