摘要
以3种二酐和3种二胺为单体,合成了9种不同结构的聚酰亚胺(PI)均质膜;在303.15K下分别测量了水蒸气小分子在PI膜中的动态吸收曲线;并通过计算反常扩散指数(dw),讨论了聚酰亚胺膜材料的吸附性能与结构的关系.
Nine kinds of polyimide （PI） membranes with different structures were prepared by condensation polymerization of different kinds of dianhydrides and diamines. The dynamic adsorption curves of steam permeated in different PI membranes at the temperature of 303.15 K were measured. The relationships between the adsorption property and the PI membrane structure were discussed by using the calculated anomalous diffusion index.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2009年第2期51-55,共5页
Membrane Science and Technology
基金
国家“973”项目(2003CB615701)
国家自然科学基金(20576059,20676067,20736003)
中石化科技开发研究基金(X505002)
中石油风险创新基金(05051143)
关键词
渗透汽化
聚酰亚胺
吸附特性
反常扩散指数
pervaporation
polyimide
adsorption property
anomalous diffusion index
