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Molecularly Designed Stabilized Asymmetric Hollow Fiber Membranes for Aggressive Natural Gas Separation
Gongping Liu1,2, Nanwen Li3,4, Stephen J Miller5
1School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332-0100, USA. gpliu@njtech.edu.cn.
Angewandte Chemie (International Ed. in English)
|October 5, 2016
Abstract:
New rigid polyimides with bulky CF3 groups were synthesized and engineered into high-performance hollow fiber membranes. The enhanced rotational barrier provided by properly positioned CF3 side groups prohibited fiber transition layer collapse during cross-linking, thereby greatly improving CO2 /CH4 separation performance compared to conventional materials for aggressive natural gas feeds.
