Sökning: id:"swepub:oai:DiVA.org:ri-29626" >
Modified galactoglu...
Modified galactoglucomannans from forestry waste-water for films and hydrogels
-
Lindblad, M. S. (författare)
-
- Dahlman, Olof (författare)
- RISE,STFI-Packforsk
-
Sjöberg, J. (författare)
-
visa fler...
-
Albertsson, A. -C (författare)
-
visa färre...
-
(creator_code:org_t)
- 2010-12-20
- 2009
- Engelska.
-
Ingår i: American Chemical Society Symposium Series (ACS). - Washington DC : American Chemical Society. - 0097-6156 .- 1947-5918. ; 1017, s. 185-198
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Hemicelluloses are among the most abundant natural polymers in the world and are consequently a potential source for sustainable materials, that has so far been underexploited. Galactoglucomannans are the principal hemicelluloses in softwoods and can be found in, for example, industrial wood processing waste-water. Currently, we are investigating the fractionation and purification of O-acetylgalactoglucomannans from newsprint and fiberboard mill waste-waters, as well as the preparation of new barrier films with low oxygen permeation and hydrogel materials from the fractions obtained. Self-supporting films have been formed by solution-casting. Interesting oxygen barrier and mechanical strength properties were achieved for films obtained from a physical blend of O-acetyl-galactoglucomannan and either alginate or carboxymethylcellulose. To create oxygen barrier films with high resistance towards moisture, benzylated derivatives of O-acetyl-galactoglucomannan were made. A hydrogel is a polymeric material that swells in water but does not dissolve, valuable for applications including drug delivery. In order to obtain the right properties, we performed tailored cross-linking to create a flexible network structure. The chemical modification procedure involves a methacrylation reaction carried out under mild conditions. Herein we review past work and present some new data on fractionation and purification of galactoglucomannans. © 2009 American Chemical Society.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Trävetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Wood Science (hsv//eng)
Nyckelord
- Blending
- Cellulose
- Chemical modification
- Drug delivery
- Film preparation
- Hydrogels
- Oxygen
- Purification
- Softwoods
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas