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Biodegradable polym...
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Lindblad, M. S.
(författare)
Biodegradable polymers from renewable sources : Rheological characterization of hemicellulose-based hydrogels
- Artikel/kapitelEngelska2005
Förlag, utgivningsår, omfång ...
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2005-01-28
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American Chemical Society (ACS),2005
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-14606
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-14606URI
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https://doi.org/10.1021/bm049515zDOI
Kompletterande språkuppgifter
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Språk:engelska
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Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20100525
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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 solidlike 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.
Ämnesord och genrebeteckningar
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dynamic-mechanical analysis
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wood
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Albertsson, Ann-ChristineKTH,Fiber- och polymerteknologi(Swepub:kth)u1mpsp3u
(författare)
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Ranucci, E.
(författare)
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Laus, M.
(författare)
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Giani, E.
(författare)
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KTHFiber- och polymerteknologi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Biomacromolecules: American Chemical Society (ACS)6:2, s. 684-6901525-77971526-4602
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