论文部分内容阅读
采用水溶液沉淀法合成了甲基丙烯酸二甲氨基乙酯(DM)和丙烯腈(AN)的共聚物,用红外光谱、黏度法和X射线衍射分析了聚合物的结构.实验考察了反应条件对共聚物结构的影响.在此基础上,通过溶液浇注法制备了甲基丙烯酸二甲氨基乙酯(DM)和丙烯腈(AN)的共聚物膜,研究了聚合物膜的CO2、CH4渗透性能.结果表明,由于共聚物中含有能与CO2进行可逆反应的叔胺基,共聚物膜表现出较好的CO2渗透性和CO2/CH4选择性,如在25℃、压力为1140Pa时,CO2的渗透速率可达3.53×10-12cm3(STP).cm-2.s-1.Pa-1,CO2/CH4的理想分离因子达到104.5.利用膜吸附CO2和CH4后红外光谱的变化,分析了膜对CO2的促进传递机理.
The copolymer of dimethylaminoethyl methacrylate (DM) and acrylonitrile (AN) was synthesized by aqueous solution precipitation method. The structure of the polymer was analyzed by IR, viscometry and X-ray diffraction. The effects of reaction conditions Copolymer structure.The copolymer films of dimethylaminoethyl methacrylate (DM) and acrylonitrile (AN) were prepared by solution casting method, and the permeation properties of CO2 and CH4 The results showed that the copolymer membranes showed good CO2 permeability and CO2 / CH4 selectivity because of the presence of tertiary amino groups which could react with CO2 reversibly. For example, at 25 ℃ and pressure of 1140 Pa, CO2 The ideal separation factor of CO2 / CH4 reached to 104.5 at infiltration rate of 3.53 × 10-12cm3 (STP) .cm-2.s-1.Pa-1. The changes of infrared spectra of CO2 and CH4 were analyzed. The promotion of CO2 transmission mechanism.