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Title

Novel hydrogels of chitosan and poly(vinyl alcohol)-g-glycolic acid copolymer with enhanced rheological properties

AuthorsLejardi, A.; Hernández, R.; Criado, María ; Santos, J. Ignacio; Etxeberría, A.; Sarasua, J. R.; Mijangos, Carmen
Issue Date2014
PublisherPergamon Press
CitationCarbohydrate Polymers 103: 267- 273 (2014)
AbstractPoly(vinyl alcohol) (PVA) has been grafted with glycolic acid (GL), a biodegradable hydroxyl acid to yield modified poly(vinyl alcohol) (PVAGL). The formation of hydrogels at pH = 6.8 and physiological temperature through blending chitosan (CS) and PVAGL at different concentrations has been investigated. FTIR, DOSY NMR and oscillatory rheology measurements have been carried out on CS/PVAGL hydrogels and the results have been compared to those obtained for CS/PVA hydrogels prepared under the same conditions. The experimental results point to an increase in the number of interactions between chitosan and PVAGL in polymer hydrogels prepared with modified PVA. The resulting materials with enhanced elastic properties and thixotropic behavior are potential candidates to be employed as injectable materials for biomedical applications. © 2013 Elsevier Ltd.
URIhttp://hdl.handle.net/10261/93000
DOI10.1016/j.carbpol.2013.12.040
Identifiersdoi: 10.1016/j.carbpol.2013.12.040
issn: 0144-8617
e-issn: 1879-1344
Appears in Collections:(ICTP) Artículos
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