【摘 要】
：
The present study aimed to improve the pervaporation (PV) performances of polydimethy-lsiloxane (PDMS) membranes by using special cross-linkers. The γ-methacryloxypropyl trimethoxy silane (KH-570) cross-linked PDMS membranes were fabricated and characteri
【机 构】
：
Electric Power Research Institute of Guangdong Power Grid Company Ltd., Guangzhou 510080, China;Coll
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
The present study aimed to improve the pervaporation (PV) performances of polydimethy-lsiloxane (PDMS) membranes by using special cross-linkers. The γ-methacryloxypropyl trimethoxy silane (KH-570) cross-linked PDMS membranes were fabricated and characterized by FTIR, TGA, WCA, DSC, SEM, and swelling properties. Experimental results showed that the separation factor of the membrane increased slightly with the feed temperature whereas permeate flux increased. Butanol flux increased slowly with the feed concentration while the water flux decreased. The overall result indicated that the separation factor decreased slowly with the feed concentration. The membrane, with a thickness of 55 μm, showed a total flux of 308.4 g/m2h with a separation factor of 26.8 at 70 ℃, and butanol permeability reached 11.13×105 Barrer with a membrane selectivity of 56.0.
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