摘要
以甲基丙烯-酸N,N-二甲氨基乙酯和N-异丙基丙烯酰胺为功能单体,采用自由基聚合法合成一系列不同组成的聚(甲基丙烯酸-N,N-二甲氨基乙酯-co-N-异丙基丙烯酰胺)P(DMAEMA-co-NIPAM)共聚物.利用紫外透光率和荧光技术研究了聚合物水溶液的相行为以及聚丙烯酸(PAA)对P(DMAEMA-co-NIPAM)共聚物pH敏感性的影响.结果表明,所合成的P(DMAEMA-co-NIPAM)共聚物其温敏性和pH敏感性相互依赖.在pH值等于4附近时,PAA的加入对P(DMAEMA-co-NIPAM)的pH敏感性产生较大影响.
The random copolymers P（DMAEMA-co-NIPAM） with different feed ratio （by molar percent） were prepared by free radical polymerization. The phase behavior of the random copolymers in aqueous solutions and its pH sensitivity effected by poly （acrylic acid） （PAA） were studied by UV- Vis transmittance measurement and fluorescence techniques, The results demonstrated that the temperature and pH-sensitivities for the random copolymers in aqueous solutions were mutually influenced. The addition of PAA greatly influenced the pH sensitivity of P（DMAEMA-co-NIPAM） at about pH4.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第3期60-64,共5页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(20674048)
