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A model system to study esterification reactions in cellulosic or lignocellulosic material
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.ORCID-id: 0000-0002-7711-9267
2007 (engelsk)Inngår i: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 33, nr 4, s. 177-183Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2007. Vol. 33, nr 4, s. 177-183
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Forskningsprogram
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URN: urn:nbn:se:ltu:diva-14383Lokal ID: dbc09e30-0a2e-11dd-ae49-000ea68e967bOAI: oai:DiVA.org:ltu-14383DiVA, id: diva2:987338
Merknad
Validerad; 2007; 20080414 (pafi)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-11-24bibliografisk kontrollert

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Pantze, AnnaKarlsson, OlovWestermark, Ulla

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