【摘要】 通过自由基共聚合反应 ,合成了一系列不同分子量、不同乙烯基吡啶基的聚 (甲基丙烯酸丁酯 +(4-乙烯基 )吡啶 )共聚物 ,并以低真空度法测试了其氧氮渗透性能。结果表明 ,随着共聚物膜中乙烯基吡啶含量的增加 ,共聚物膜的密度、玻璃化转变温度及氧氮选择性都随之增加 ,但氧氮渗透率和扩散系数、溶解度系数却相应下降更多还原

【Abstract】 A series of poly(butyl methacrylate co (4 vinyl)pyridine)s with varied molecular weight and 4 vinyl pyridine content were synthesized using free radical copolymerization, and the gas permeation behaviors in copolymer membranes were measured using a low vacuum permeation apparatus . It shows that the density, T g and oxygen/nitrogen selectivity of the copolymer membranes are increased, but the oxygen and nitrogen permeability, diffusion coefficients and solubility coefficients in the copolymer membranes are reduced with the increase of the 4 vinyl pyridine content in copolymers.更多还原