甲基丙烯酸三丁基锡和甲墓丙烯酸异戊酯共聚合参数的测定

Determination of Copolymerization Parameters of Tributyltin Methacrylate with Isopentyl Methacrylate

有机锡聚合物兼具杀菌防腐的生物活性功能和一般高分子材料的结构功能，有着潜在的应用前景［１］。本工作应用Ｘ射线萤光光谱测定甲基丙烯酸三丁基锡（ＴＢＴＭ）和甲基丙烯酸异戊酯（ＩＰＭＡ）共聚物中锡的含量。方便，迅速地获得了该共聚物的组成，计算了ＴＢＴＭ和ＩＰＭＡ在四氢呋喃中，５５℃下共聚合的竞聚率，其结果分别为０．２９和０．２４。

Copolymer of tributyltin methacrylate(M1)with isopentyl methacrylate(M2)was synthesized in THF solution at 55±1℃ utilizing azobisisobutyronitrile as initiator.Copolymer composition was determined by tin analysis which was measured through X-ray fluorescence spectrometer(X-RFS)conveniently and rapidly. The monomer reactivity ratios for radical copolymerization of M1 with M2 at the condition above were calculated to be r1=0.29 and r2=0.24, respectively.