| 分子结构对聚酰亚胺膜分离CO_2/CH_4性能的影响 |
| |
| 引用本文： | 张俊彦,刘维民,薛群基. 分子结构对聚酰亚胺膜分离CO_2/CH_4性能的影响[J]. 高分子学报, 1999, 81(2): 227-231 |
| |
| 作者姓名： | 张俊彦 刘维民 薛群基 |
| |
| 作者单位： | 中国科学院兰州化学物理研究所固体润滑开放实验室,兰州,730000 |
| |
| 摘 要： | 气体在致密高分子膜中的渗透过程与高分子的链段活动性和自由体积有关，高分子的链段活动性越大，气体的扩散越容易，气体的透过速度越快，高分子自由体积增大，气体的溶解系数增大，扩散速率加快，透气速率上升．因此，为了得到高选择性和高透气性的分离膜，可对其化学结...
|
| 关 键 词： | 聚酰亚胺，膜，分离CO2／CH4 |
THE EFFECT OF MOLECULAR STRUCTURE ON THE PERMEABILITIES OF POLYMIDES |
| |
| ZHANG Junyan,LIU Weimin,XUE Qunji. THE EFFECT OF MOLECULAR STRUCTURE ON THE PERMEABILITIES OF POLYMIDES[J]. Acta Polymerica Sinica, 1999, 81(2): 227-231 |
| |
| Authors: | ZHANG Junyan LIU Weimin XUE Qunji |
| |
| Abstract: | Two new polymides with aliphatic group were synthesized.The aims are to break through the limit which aromatic polyimide is primarily material as gas separation membrane in polyimide membrane materials,and to look for gas separation membrane materials with good permeability and selectivity.Meantime,the gas permeate behavior of the new polyimides was also discussed.The relationship between permeation and structure of membranes were discussed.A preliminary probe into the mechanism of CO 2 and CH 4 permeating through polyimide membrane was done. |
| |
| Keywords: | CO 2 CH 4 Separation Polyimide Membrane |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
