Preparation of multi-layer silicone/PVDF composite membranes for pervaporation of ethanol aqueous solutions

doi:10.1016/j.memsci.2004.03.026

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 會議論文 > Item 987654321/36722

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題名:	Preparation of multi-layer silicone/PVDF composite membranes for pervaporation of ethanol aqueous solutions
作者:	Chang, Cheng-ling;Chang, Ming-shih
貢獻者:	淡江大學化學工程與材料工程學系
關鍵詞:	Composite membrane;Silicone;PVDF;Pervaporation;Multi-layer
日期:	2004-05-28
上傳時間:	2010-01-11 11:23:39 (UTC+8)
摘要:	Composite membrane of silicone/PVDF was prepared by curing a copolymer of polysiloxane and phosphate ester cast on porous PVDF substrate. The substrate was previously plasma-grafted with a thin layer of silicone compatible material. The formed composite membrane was employed in pervaporation separation processes to separate ethanol–water solutions. It was found that the synthesized composite membrane exhibited excellent ethanol-permselectivity, particularly in the low ethanol concentration range. The separation factor of the composite membrane increased with increasing the thickness of the active silicone layer whereas the permeation flux follows a reversed order. In addition, multiple-layer composite membranes with an alternating silicone/PVDF/silicone configuration were prepared and tested for their separation capabilities. The results indicated that the membrane with four silicone layers gave the best performance with a separation factor of 31, permeation rate of 0.9 kg/m2 h and PSI of 27,900 at a 10 wt.% ethanol feed concentration.
關聯:	Proceedings of The Second Conference on Membrane Science & Technology in Taiwan, Chungli, Taiwan, p.99-102
DOI:	10.1016/j.memsci.2004.03.026
顯示於類別:	[化學工程與材料工程學系暨研究所] 會議論文

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