SYNTHESIS AND PROPERTIES OF SEMIINTERPENETRATING POLYMER NETWORKS COMPOSED OF BETA-CHITIN AND POLY(ETHYLENE GLYCOL) MACROMER

被引:90
作者
KIM, SS
LEE, YM
CHO, CS
机构
[1] HANYANG UNIV,COLL ENGN,DEPT IND CHEM,SEOUL 133791,SOUTH KOREA
[2] CHONNAM NATL UNIV,DEPT POLYMER ENGN,KWANGJU 500757,SOUTH KOREA
关键词
SEMI-IPN; BETA-CHITIN/PEG MACROMER; HYDROGEL;
D O I
10.1016/0032-3861(95)96859-7
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Semi-interpenetrating polymer network (semi-IPN) hydrogel membranes composed of beta-chitin and poly(ethylene glycol) (PEG) diacrylate macromer were synthesized and characterized for future biomedical application. PEG macromer/beta-chitin dissolved in formic acid was cast to prepare films, followed by subsequent crosslinking with 2,2-dimethoxy-2-phenylacetophenone by u.v. irradiation. Photocrosslinked hydrogels exhibited relatively high equilibrium water content in the range of 60-81%. The crystallinity, thermal properties and mechanical properties of semi-IPN hydrogel membranes were studied. All the crosslinked membranes revealed a remarkable decrease in crystallinity. Their glass transition temperatures increased with increasing beta-chitin content. The tensile strengths of semi-IPNs in the swollen state range between 1.35 and 2.41 MPa; these are the highest values reported to date for crosslinked hydrogels.
引用
收藏
页码:4497 / 4501
页数:5
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