渗透物小分子在致密高聚物膜内传递行为的研究(Ⅱ)动态吸附行为  

Study on the transfer behavior of small molecular permeates in dense polymer membranes (Ⅱ) Dynamic sorption behavior

作　　者：陈翠仙[1] 韩宾兵[1] 尚天刚[1] 李继定[1] 蒋维钧[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《膜科学与技术》2000年第2期4-7,共4页Membrane Science and Technology

基　　金：国家自然科学基金;石化基础研究基金

摘　　要：推导出了整个扩散区的扩散方程和动态吸附初期的吸附方程 ,实验研究并分析了CH2 Cl2 、CH3OH、CH3CH2 OH和H2 O 4种渗透物小分子在不同厚度的聚酰亚胺高聚物膜内的动态吸附行为 ,并计算出了反常扩散指数dw.The diffusion equation and the sorption equation in initial sorption stage for whole diffusion zones were obtained. The dynamic sorption experiments of CH_2Cl_2, CH_3OH, CH_3CH_2OH and H_2O in polyimide(PI) polymer membrane with different thickness were conducted. The anomalous diffusion factors of those small molecular permeates were calculated and analyzed.

关 键 词：扩散方程 动态吸附 渗透物 同聚物膜材料 膜分离 

分 类 号：TQ028.8[化学工程] TQ051.893