Molecularly Designed Stabilized Asymmetric Hollow Fiber Membranes for Aggressive Natural Gas Separation

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• 作者：Dr. Gongping Liu ; Dr. Nanwen Li ; Dr. Stephen J. Miller ; Danny Kim ; Dr. Shouliang Yi ; Dr. Ying Labreche and Prof. Dr. William J. Koros
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：October 24, 2016
• 年：2016
• 卷：128
• 期：44
• 页码：13958-13962
• 全文大小：1963K
• ISSN：1521-3757

文摘

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.