摘要
以羟丙基纤维素为模板,在水溶液中合成了不含表面活性剂的聚甲基丙烯酸(PMAA)纳米水凝胶。再以该PMAA纳米水凝胶为模板,合成了具有pH和温度双重敏感的聚甲基丙烯酸/聚N-异丙基丙烯酰胺(PMAA-PNIPA)核壳结构纳米水凝胶。对纳米水凝胶的形态、结构、pH以及温度敏感性的表征结果表明,纳米水凝胶粒径为338.8～407.9 nm,并随交联剂用量的增加而减小,其体积相转变具有良好的pH及温度响应性,这种绿色合成的生物相容性新型核壳结构纳米水凝胶具有极为广泛的应用前景。
A novel approach to prepare surfactant-free poly（methacrylic acid）（PMAA） nanohydrogels using hydroxypropyl cellulose as template in water solution was demonstrated.pH and temperature-sensitive core-shell nanogels using PMAA nanohydrogels as template were synthesized.The sizes of PMAA-PNIPA nanohydrogels were in the range of 338.8-407.9 nm,and decreased with the increasing of the content of cross-linking agent.The nanohydrogel showed good pH-temperature responsive behaviors.The nanohydrogel synthesized with soap-free emulsion polymerization will be applied in numerous fields.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2012年第1期47-51,共5页
Journal of Functional Polymers
基金
上海市科学技术委员会国际合作项目(09520709600)
