Source:http://linkedlifedata.com/resource/pubmed/id/15762630
Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
|
pubmed:dateCreated |
2005-3-14
|
pubmed:abstractText |
Hemicellulose-based hydrogels were prepared by radical polymerization of 2-hydroxyethyl methacrylate or poly(ethylene glycol) dimethacrylate with oligomeric hydrosoluble hemicellulose modified with well-defined amounts of methacrylic functions. The polymerization reaction was carried out in water at 40 degrees C using a redox initiator system. The hydrogels were in general elastic, soft, and easily swellable in water. Their viscoelastic properties were determined by oscillatory shear measurements on 2 mm thick hydrogels under a slight compression to avoid slip, over the frequency range 10(-1) to 10(2). The rheological characterization indicated that the elastic response of the hydrogels was stronger than the viscous response, leading to the conclusion that the hydrogel systems displayed a predominantly solid-like behavior. The curves showed an increase in shear storage modulus with increasing cross-linking density. The nature of the synthetic comonomer in the hemicellulose-based hydrogels also influenced the shear storage modulus. Comparison of hemicellulose-based hydrogels with pure poly(2-hydroxyethyl methacrylate) hydrogels showed that their behaviors were rather similar, demonstrating that the synthetic procedure made it possible to prepare hemicellulose-based hydrogels with properties similar to those of pure poly(2-hydroxyethyl methacrylate) hydrogels.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Hydrogels,
http://linkedlifedata.com/resource/pubmed/chemical/Polyethylene Glycols,
http://linkedlifedata.com/resource/pubmed/chemical/Polyhydroxyethyl Methacrylate,
http://linkedlifedata.com/resource/pubmed/chemical/Polymers,
http://linkedlifedata.com/resource/pubmed/chemical/Polysaccharides,
http://linkedlifedata.com/resource/pubmed/chemical/hemicellulose
|
pubmed:status |
MEDLINE
|
pubmed:issn |
1525-7797
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
6
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
684-90
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:15762630-Biodegradation, Environmental,
pubmed-meshheading:15762630-Conservation of Natural Resources,
pubmed-meshheading:15762630-Hydrogels,
pubmed-meshheading:15762630-Polyethylene Glycols,
pubmed-meshheading:15762630-Polyhydroxyethyl Methacrylate,
pubmed-meshheading:15762630-Polymers,
pubmed-meshheading:15762630-Polysaccharides,
pubmed-meshheading:15762630-Rheology
|
pubmed:articleTitle |
Biodegradable polymers from renewable sources: rheological characterization of hemicellulose-based hydrogels.
|
pubmed:affiliation |
KTH Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|