期刊
CARBOHYDRATE POLYMERS
卷 83, 期 1, 页码 171-178出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.07.038
关键词
Highly porous hydrogel; Gelation temperature; Pore diameter; Degradation behavior
In this study, highly porous chitosan-alpha,beta-glycerophosphate hydrogels were prepared by changing the chitosan/alpha,beta-glycerophosphate ratio. The gelation temperatures of these gels determined from rheological analysis indicated that the gelation temperature decreased by increasing alpha,beta-glycerophosphate content. The chemical structures and morphology of the hydrogels were examined by FTIR and SEM, respectively. The SEM images showed a highly porous 3D chitosan-alpha,beta-glycerophosphate hydrogel structure with interconnected pores and the pore diameters depended on the chitosan/alpha,beta-glycerophosphate ratio. The swelling and degradation experiments indicated that the degradation behaviors of these hydrogels via bulk erosion relied heavily on the chitosan/alpha,beta-glycerophosphate ratio. This study suggested that the gelation temperature, pore diameter and degradation behaviors of chitosan-based porous hydrogels can be controlled by changing the ratio of chitosan and alpha,beta-glycerophosphate. (C) 2010 Elsevier Ltd. All rights reserved.
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