研究了不同投料比的甲基丙烯酸三丁基锡酯(TBTMA)与甲基丙烯酸甲酯(MMA)共聚物的合成和分级方法，测定了各级分的分子量和对应的特性粘数，订定了Mark-Houwink方程式的K、α值.当n(TBTMA)∶n(MMA)=1∶1时，K=0.225，α=0.46，d=2.32.当n(TBTMA)∶n(MMA)=1∶2时，K=1.69×10-4，α=1.18，d=1.23.
Synthesis and fractionation of copolymes of tri-n-butyltinmethacrylate(TBTMA) with MMA have been investigated. The fractionated molecular weight and corresponding [η] of copolymers and K and α values in Mark-Houwink equation of copolymers have been determined. In case of TBTMA∶MMA=1∶1 (feed molar ratio), K=0.225, α=0.46, the distribution of molecular weight d is 2.32 and in case of TBTMA∶MMA=1∶2 (feed molar ratio), K=1.69×10-4, α=1.18, d=1.23.
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