ratios of organosilyl monomers was carried out at 60-70C. The compositions of the polymers were determined by FT-IR spectroscopy and 1 H-NMR. The glass transition temperature (Tg) of the polymers was determined calorimetrically. The study of DSC curves showed that incorporation of monomers with cyclic units in polymer chains increases the rigidity of terpolymers and the Tg value is subsequently increased
通过自由基交联共聚制备了一系列含有甲
硅烷基侧基的三元共聚物。Et3Si 和 HMe2Si 与 4-
乙烯基苄基共价连接,分别缩写为
TESiMSt 和
DMSiMSt。Et3Si 与
甲基丙烯酸 2-羟
乙酯 (
HEMA) 共价连接。甲
硅烷基连接的
HEMA 缩写为
TESi
EMA。
甲基丙烯酸(MAA)与不同摩尔比的有机甲
硅烷基单体的自由基三聚反应在60-70℃进行。通过FT-IR光谱和1 H-NMR确定聚合物的组成。聚合物的
玻璃化转变温度(Tg)通过量热法测定。
DSC曲线的研究表明,在聚合物链中加入具有环状单元的单体增加了三元共聚物的刚性,Tg值随之增加。