溴代聚苯醚膜对有机液/水混合体系的渗透汽化分离  

Pervaporation separation of the organic solvent/water liquid mixtures through BPPO membranes

作　　者：蒋晓钧[1] 施艳荞[1] 陈观文[1] 

机构地区：[1]中国科学院化学研究所,北京100080

出　　处：《膜科学与技术》2000年第5期16-20,共5页Membrane Science and Technology

基　　金：国家自然科学基金!重点资助项目 (598331 2 0 )

摘　　要：对聚 2 ,6-二甲基苯撑氧 (PPO)进行了溴代反应 ,制备的溴代PPO(简称BPPO)均质膜 ,以氨水进行化学交联后 ,表征了其对氯代烃如二氯甲烷、氯仿、氯苯及乙酸乙酯等的水溶液的渗透汽化 (PV)特性 ;研究了BPPO膜交联性质与其PV特性间的关系 ,并进行了理论解释 .In order to find a good membrane material, bromide poly(2,6-methyl- p -phenylene oxide) (BPPO) was made and modified by heterogeneous crosslinking reaction with aqueous ammonia. Its pervaporation characteristics in extracting volatile organic solvents such as dichloromethane, chloroform, benzene chloride and ethyl acetate from water was investigated. The membrane crosslinked with amine for 15 hours showed good performance for separating 9.3×10 -3 % (mass fraction)benzene chloride/water liquid mixture at 20?℃ and 100?Pa, the selectivity increased to 6.2×10 5 while the value of flux was about 24.0?g/(m 2·h) ideally. The relationship between crosslinked properties and permeation behaviors was studied and some theoretic interpretation was given to the results.

关 键 词：溴代聚苯醚 有机液/水体系 渗透汽化 膜分离 

分 类 号：TQ028.8[化学工程]