459677 Sulfonated Network in Polymers of Intrinsic Microporosity for Gas Separation

Monday, November 14, 2016: 2:43 PM
Plaza B (Hilton San Francisco Union Square)
Wai Fen Yong1, Zhi Kang Lee2, Tai-Shung Chung1, Martin Weber3, Claudia Staudt4 and Christian Maletzko5, (1)Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore, (2)National University of Singapore, Singapore, Singapore, (3)BASF, Ludwigshafen, Germany, (4)Advanced Materials & Systems Research GM-B001, BASF SE, Ludwigshafen, Germany, (5)BASF SE, Ludwigshafen, Germany

Sulfonated polymer networks increase CO2 uptake up to 13.5 % in sorption tests. In general, sulfonations of polymers were conducted in acid conditions such as sulfuric acid, chlorosulfonic acid or trimethylsilyl chlorosulfonate. However, polymer sulfonation may lead to further polymer cross-linking and degradation. We reported here the sulfonated network can significantly improve the gas separation performance of highly permeable polymers of intrinsic microporosity because the sulfonated groups tend to have strong molecular interactions with CO2 and O2. The presence of a higher degree of sulfonation in the polymer chains drives the membranes with better gas separation performance close to or above the Robeson upper bound lines for major gas-pairs separation. Moreover, they also displayed improved anti-plasticization properties up to 30 atm using a binary CO2/CH4 feed gas. The newly developed advanced polymeric membranes are potential candidates for air separation, natural gas separation and CO2 capture.

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See more of this Session: Membranes for Gas Separations I
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