有机锡聚合物水解的研究Ⅰ——甲基丙烯酸三丁基锡酯聚合物及其与甲基丙烯酸甲酯共聚物的水解

测定了甲基丙烯酸三丁基锡醅与甲基丙烯酸甲酯共聚物的~1H-NMR谱。研究了共聚物组成不同,共聚物组成相同但分子量不同,以及实验条件(如pH值和温度)不同对聚合物水解速率的影响。根据电子探针观测,聚合物水解前后,膜表面的有机锡含量和分布基本相同。分别计算了聚合物和共聚物水解的表观活化能。

Studies on the Hydrolysis of the Organotin Polymers I, The Hydrolytic Rates of Poly(Tributyltin Methacrylate) and Poly(Tributyltin Methacrylate-Co-Metyl Methacrylate)

In the ~1H-NMR spectroscopy, the ~1H-NMR spectra of both of the poly (TBTM-co-MMA) are the same. Experimental results show that their microstructures are also equal. After hydrolysis, the distribution of organotin moieties of PTBTM and Poly(TBTM-co-MMA) were observed by using electron probe microanalysis method. Results indicated that uniform distribution of organotin moieties as shown before hydrolysis. After hydrolysis, the concentration of organotin moieties is the same before hydrolysis.The effects of the molecular weights, content of organotin in the copolymers and temperature on the hydrolytic rates of polymer and copolymers increase with increase of these factors.