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New hemicellulose-b...
New hemicellulose-based hydrogels
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- Lindblad, M. S. (author)
- KTH,Fiber- och polymerteknologi
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- Albertsson, Ann-Christine (author)
- KTH,Polymerteknologi
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- Ranucci, Elisabetta (author)
- KTH,Fiber- och polymerteknologi
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(creator_code:org_t)
- WASHINGTON : AMER CHEMICAL SOC, 2004
- 2004
- English.
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In: HEMICELLULOSES: SCIENCE AND TECHNOLOGY. - WASHINGTON : AMER CHEMICAL SOC. - 0841238421 ; , s. 347-359
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Different kinds of hemicellulose-based hydrogels have been made by radical polymerization using hydrosoluble hemicellulose from spruce chips with a number-average molecular weight and polydispersity of 2400 and 1.5 respectively. 80% of the hemicellulose was galactoglucomannan. and the remainder mainly 4-O-methylglucuronoxylan. Hemicellulose/poly(2-hydroxyethyl methacrylate) based hydrogels were prepared by polymerization in water of 2-hydroxyethyl methacrylate with hemicellulose modified with well-defined amounts of methacrylic functions. The chemical modification of hemicellulose was performed in dimethyl sulfoxide using 2[(l-imidazolyl) formyloxy]ethyl methacrylate as modifying agent. The kinetics of the modification reaction were monitored by H-1 NMR. The degree of modification of the hemicellulose used for the hydrogel synthesis varied from 10% to 40%. The ratio of modified hemicellulose to 2-hydroxyethyl methacrylate in the hydrogels was 1: 1 by weight. The resulting hydrogels were elastic, homogeneous, soft, transparent and easily swollen in water.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- dextran
- polymers
- wood
Publication and Content Type
- ref (subject category)
- kon (subject category)
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