The effect of Tween-20 additive on the morphology and performance of PVDF membranes

doi:10.1016/j.memsci.2014.05.011

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 > 期刊論文 > Item 987654321/100128

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題名:	The effect of Tween-20 additive on the morphology and performance of PVDF membranes
作者:	Chang, Hsu-Hsien;Chen, Sheng-Chang;Lin, Dar-Jong;Cheng, Liao-Ping
貢獻者:	淡江大學化學工程與材料工程學系
關鍵詞:	PVDF membrane;Surfactant;Macrovoid;Immersion precipitation;Ultra-filtration
日期:	2014-09-15
上傳時間:	2015-01-28 11:38:57 (UTC+8)
出版者:	Amsterdam: Elsevier BV
摘要:	The effects of additive, Tween-20, on the morphology and ultra-filtration performance of the PVDF membranes formed by isothermal immersion precipitation from the Tween-20/water/TEP/PVDF system were investigated. High resolution FESEM imaging indicates that the membranes׳ bulk constituted of interlinked crystalline particles, whose shapes change from more sheaf-like to more stick-like as larger amounts of Tween-20 were initially added into the dope. Introduction of Tween-20 caused formation of nano-pores on the top surfaces of the membranes and micron-sized columnar voids underneath the top skin layer. Some small amounts of Tween-20 may reside in the formed membrane if the nascent membrane has not been carefully washed. Presence of Tween-20 in the membrane was analyzed by water contact angle measurements, Fourier Transform Infrared-Attenuated total reflection spectroscopy (FTIR-ATR), Nuclear Magnetic Resonance (NMR), and X-ray Photoelectron Spectroscopy (XPS). Furthermore, water flux and blue dextran filtration experiments were carried out to illustrate the potential applications of the membranes in fine separation processes.
關聯:	Journal of Membrane Science 466, pp.302–312
DOI:	10.1016/j.memsci.2014.05.011
顯示於類別:	[化學工程與材料工程學系暨研究所] 期刊論文

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