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作 者:张浩[1] 孙元[1] 邓新华[1] 边栋材[1] 周晓峰[1] 张涛[1]
机构地区:[1]天津工业大学材料科学与化学工程学院,天津300160
出 处:《天津工业大学学报》2007年第2期24-26,共3页Journal of Tiangong University
摘 要:用不同摩尔比的丙烯酸(AA)和丙烯腈(AN)进行水溶液共聚,把所得共聚物溶液刮膜,并夹在聚乙烯醇(PVA)缩甲醛交联膜之间制备渗透汽化复合膜,采用该膜对60%-90%醇-水溶液进行渗透汽化分离实验,并与自制的聚乙烯醇缩甲醛交联膜进行对比.结果表明:丙烯酸和丙烯腈单体摩尔比为1:1时,渗透汽化效果较好,在50℃分离90%的甲醇-水溶液时,渗透通量为2300g/(m^2·h),分离系数达到18;1:1共聚复合膜的渗透汽化分离指数约为41.4kg/(m^2·h),是聚乙烯醇缩甲醛交联膜的1.53倍.Different mole ratio of acrylic acid(AA) and acrylonitrile(AN) are copolymerized in aqueous solution, and the copolymerization is carried out to prepare the pervaporation compound membrane between two layers of polyvinylformal crosslinked membrane. The membrane is used to separate the methanol / water solution of which con- centration is from 60% to 90% and compared with the separation effect of polyvinylformal crosslinked membrane. The results show that when the mole ratio of AA/AN is 1 : 1, the pervaporation separation properties of membrane is better; using this membrane to separate 90% methanol/water solution under 50℃, the flux is 2 300 g/(m^2· h), the separation coefficient is 18; the PSI of this compound membrane( 1:1 ) is about 41.4 kg/( m^2 ·h), which is the 1.53 times of polyvinylformol crosslinked membrane PV data.
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