摘要
采用室温固化硅橡胶及其它三种改性硅氧烷聚合物制成渗透汽化膜,分离丙酮(A),丁酮(B)、乙醇(E)及异丙醇(P)等有机物的水溶液。结果表明,随着透过温度提高、透量成指数关系增大,但对分离系数影响甚小。透量大小顺序为A>B>E>P,分离系数大小顺序为A>B>P>E,当膜材料中(CH_3)_2SiO链节含量由70%上升到100%时,有机物的透量及分离系数同时增加。
Pervaporation of dilute aqueous binary mixtures of four organic compounds (acetone A,butanone B,ethanol E and isopropanol P) through silicone rubber (PDMS) and its modifications was investigated. The experimental results showed that an increase in temperature increased the flux exponentially but it had little effect on the selectivity of membrane,Flux and selectivity has the order of A>B>E>P and A>B>P>E respectively.Both properties were increasingly improved when the(CH_3)_2SiO content in the membrane raised from 70% to 100%.
出处
《应用化学》
CAS
CSCD
北大核心
1992年第5期29-33,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
渗透汽化
有机溶剂
水溶液
pervaporation, membrane, silicone rubber, acetone, ethanol, butanone, iso propanol