Preparation and Characterization of Temperature-sensitive Poly(N-isopropylacrylamide)/Poly(vinyl alcohlo) Hydrogels
ZHANG Xian Zheng, ZHUO Ren Xi * [WT5”BX](Key Laboratory of Biomedical Polymer Materials of the Educational Ministry, Department of Chemistry, Wuhan University, Wuhan 430072, China)
Poly( N isopropylacrylamide)/poly(vinyl alcohol)(PNV) hydrogels were prepared by repetitive freezing and thawing. This kind of hydrogels was formed through physical crosslinking, i.e. hydrogen bonds during the freezing process. The swelling ratio and deswelling/reswelling kinetics were measured gravimetrically and this novel hydrogel exhibits a temperature sensitivity. This hydrogel may be useful both in biomedical and biotechnological fields.
【CateGory Index】： O633