pH敏感瓜胶-聚丙烯酸水凝胶的流变和溶胀性能研究  

Rheology and Swelling Dynamics of pH-Sensitive GG/PAA Hydrogels

作　　者：白羽[1] 李程鹏[2] 张黎明[3] 

机构地区：[1]吉林医药学院药学院,吉林吉林132013 [2]广东海洋大学理学院,广东湛江524088 [3]中山大学化学与化工学院,广东广州510275

出　　处：《精细化工中间体》2007年第6期57-59,64,共4页Fine Chemical Intermediates

基　　金：教育部新世纪优秀人才支持计划项目(NCET-04-0810);国家自然科学基金资助项目(2027308630470476);教育部留学回国人员科研基金资助项目(021769);广东省自然科学基金资助项目(039184)

摘　　要：以可生物降解的多糖羧甲基羟丙基瓜胶、敏感功能性单体丙烯酸为主要原料、在性能增强剂粘土存在下,合成一类具有pH敏感性质的新型杂化水凝胶,同时探索所得杂化水凝胶的流变性能及其溶胀行为。结果表明,粘土的加入不仅提高凝胶的力学强度,并可显著增强凝胶的溶胀性能和pH敏感性能。In the work, a series of new hybrid hydrogels with pH-sensitive property were synthesized in aqueous solutions by using carboxymethyl hydroxypropyl guar gum and acrylic acid as the main raw materials, K2S2O8 as the initiator, N,N＇- methylene bis acrylamide as the crosslinking agent and the hydrophilic clay nanoparticles as the property enhancer. The structures of the resulting hydrogels were characterized by some analyses such as rheology. The results showed that the introduction of the clay could improve the swelling ability of the hydrogels and their stimuli responses.

关 键 词：水凝胶 粘土 溶胀 

分 类 号：TQ331.47[化学工程—橡胶工业]