pH/温度双重敏感高分子水凝胶的合成及性能

被引:7
作者
王欣宇
朱秀芳
韩颖超
李世普
机构
[1] 武汉理工大学生物材料与工程研究中心
关键词
水凝胶; pH/温度双重敏感; 合成; 溶胀率;
D O I
暂无
中图分类号
TB381 [智能材料];
学科分类号
080501 ; 1405 ;
摘要
选用具有优良pH敏感的丙烯酸(AAc)及温敏性的N-异丙基丙烯酰胺(NIPA)为基本原料,制备了pH/温度双重敏感水凝胶,系统研究了丙烯酸系水凝胶的基本物理性能(密度、平均分子量、交联密度、平衡态水含量、固定电荷密度等),表征了水凝胶在不同离子强度下的溶胀、退溶胀性能,并对其响应机理进行了探讨,同时对水凝胶的机械性能进行测试。结果表明:pH/温度双重敏感水凝胶的溶胀情况受pH值和温度2个因素控制,在同一温度下,pH值越高,溶胀率越高;在同一pH值下,温度越高,溶胀率越低。
引用
收藏
页码:32 / 36
页数:5
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