Abstract
利用原子转移自由基聚合(ATRP)方法, 由单体2-(2-甲氧基乙氧基)甲基丙烯酸乙酯(MEO 2 MA)和寡聚(乙二醇)甲基醚甲基丙烯酸酯(OEGMA, M n = 500 g·mol -1 )合成了无规共聚物P(MEO 2 MA-co-OEGMA). 并采用动态光散射(DLS)、紫外光谱及透射电子显微镜(TEM)等技术考察聚合物在水溶液中的温度响应性聚集行为, 获得其在水溶液中的最低临界溶解温度(LCST)及其随组成的变化规律. 结果表明, 该聚合物具有良好且可逆的温度响应行为, 这主要归因于聚合物与水分子之间氢键作用, 及其分子本身疏水作用之间为了保持一种微妙的动态平衡而自发对聚集形态进行的“自我调整”, 从而达到新的热力学平衡状态的结果. 该聚合物的LCST与聚合物中单体OEGMA所占的摩尔比例呈线性关系, 可以通过改变单体的摩尔配比实现对聚合物LCST的调控.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
