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近年来,含硅聚合物由于其特殊的化学性质而成为科研热点。文章进行了烯丙氧基三甲基硅烷的均聚以及其分别与甲基丙烯酰氧乙氧基三甲基硅烷和乙酸乙烯酯单体的共聚研究。用凝胶渗透色谱仪测试了共聚物的分子量并计算其聚合度,并将所得聚合物做成气体分离膜,采用膜分离测试分析仪测试它们的气体透过性能。结果表明:烯丙氧基三甲基硅烷与乙酸乙烯酯共聚物膜对CO2具有优先选择透过性,在CH4/CO2的气体透过性测试中分离率达到了3.1,在N2/CO2的气体透过性测试中分离率更是达到了11.5。
In recent years, silicon-containing polymers have become hot spots for research because of their special chemical properties. The homopolymerization of allyloxytrimethylsilane and its copolymerization with methacryloxyethoxytrimethylsilane and vinyl acetate monomer were studied. The molecular weight of the copolymer was measured by gel permeation chromatography and the degree of polymerization was calculated. The resulting polymer was used as a gas separation membrane, and the gas permeability of the copolymer was measured using a membrane separation analyzer. The results showed that the membrane of allyloxytrimethylsilane and vinyl acetate copolymer had a preferential permeability to CO2, and the separation rate reached 3.1 in the gas permeation test of CH4 / CO2. Under N2 / CO2 gas Through the sex test separation rate is reached 11.5.