摘要
将N-异丙基丙烯酰胺（NIPAM）和丙烯酸（AA）单体引入小分子液滴正辛烷为模板的细乳液共聚体系,制备了p H/温度双重响应性P（NIPAM-co-AA）纳米微胶囊。利用红外（FTIR）、透射电镜（TEM）表征了纳米微胶囊的结构与形貌。并研究了AA含量对纳米微胶囊的温度响应性及p H敏感性的影响。结果表明,制备的纳米微胶囊具有良好的p H敏感性和温度响应性,最低临界溶解温度（LCST）在40-50℃之间;单体AA的引入提高了纳米胶囊对p H的敏感性。
The P（ NIPAM-co-AA） nanocapsules with p H / temperature sensitive were synthesized using octane as template through introducing of comonomer N-isopropylacrylamide（ NIPAM） and acroleic acid（AA） into the miniemulsion polymerization of styrene（St）. The structure and morphology of nanocapsules were characterized by FTIR and TEM. The influence of amount of AA on p H and temperature dual stimuli-responsive properties of nanocapsules were studied. The results show that the P（ NIPAM-co-AA） nanocapsules exhibit p H and temperature dual stimuli-responsive properties,and the lower critical solution temperature（ LCST） of nanocapsules is about 40 ~ 50 ℃. The introduction of AA monomer improved the p H-sensitivity of the nanocapsules.
出处
《应用化工》
CAS
CSCD
北大核心
2015年第7期1265-1267,1271,共4页
Applied Chemical Industry
基金
安徽省自然科学基金资助项目(1408085ME86)
