物理交联聚乙烯醇/羟基末端聚酰胺-胺树型高分子水凝胶的制备与性质研究  

Preparation and Properties of Physically Cross-linked Poly(vinyl alcohol)/ Hydroxy-terminated Polyamidoamine Dendrimer Hydrogels

作　　者：武旭业[1] 黄世文[1] 张建涛[1] 卓仁禧[1] 

机构地区：[1]武汉大学化学系,生物医用高分子教育部重点实验室,武汉430072

出　　处：《高等学校化学学报》2004年第2期382-387,共6页Chemical Journal of Chinese Universities

基　　金：国家重点基础研究发展规划 (批准号 :G19990 64 70 3 );国家自然科学基金 (批准号 :2 0 2 0 40 0 9)资助

摘　　要：Novel physically cross-linked hydrogels, composed of PVA and hydroxy-terminated polyamidoamine(PAMAM) dendrimer G6-OH, were prepared by cyclic freezing/thawing treatment of aqueous solutions containing PVA and G6-OH. FTIR analysis indicates that PAMAM dendrimer G6-OH was successfully introduced into PVA hydrogels. Higher contents of G6-OH in PVA/G6-OH hydrogels resulted in higher swelling ratios, and faster reswelling rates. With the increase of freezing/thawing cyclic times, the swelling ratios and reswelling rates of PVA/G6-OH hydrogels decreased, which is similar to that of physically cross-linked PVA hydrogel.Novel physically cross-linked hydrogels, composed of PVA and hydroxy-terminated polyamidoamine(PAMAM) dendrimer G6-OH, were prepared by cyclic freezing/thawing treatment of aqueous solutions containing PVA and G6-OH. FTIR analysis indicates that PAMAM dendrimer G6-OH was successfully introduced into PVA hydrogels. Higher contents of G6-OH in PVA/G6-OH hydrogels resulted in higher swelling ratios, and faster reswelling rates. With the increase of freezing/thawing cyclic times, the swelling ratios and reswelling rates of PVA/G6-OH hydrogels decreased, which is similar to that of physically cross-linked PVA hydrogel.

关 键 词：聚乙烯醇 聚酰胺-胺树型高分子 水凝胶 制备 性质 物理交联 冷冻-融溶 生物医用高分子材料 

分 类 号：O633.4[理学—高分子化学] R318.08[理学—化学]