淡江大學機構典藏:Item 987654321/106334
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    题名: Effect of structure of PVDF membranes on the performance of membrane distillation
    作者: Hsu-Hsien Chang;Chih-Hao Tsai;Hao-Cheng Wei;Liao-Ping Cheng
    关键词: microporous membrane;PVDF;membrane distillation
    日期: 2013-10-05
    上传时间: 2016-04-22 13:46:28 (UTC+8)
    出版者: Techno-Press
    摘要: A series of microporous PVDF membranes were prepared by isothermal immersion-precipitation of PVDF/TEP casting dopes in both soft and harsh coagulation baths. Morphologies of the membranes’ top surfaces were found to depend strongly on the bath strength, which could be controlled by the TEP content in the bath. By changing the bath gradually from pure water to 70% TEP, the top surface evolved from a dense skin-like (asymmetric) to a totally open porous morphology (symmetric). The latter structure could similarly be obtained by precipitation of the same dope in an alcoholic bath, e.g., 1-butanol. Membrane distillation processes to desalt sodium chloride aqueous solutions were conducted using various prepared membranes and two commercial microporous membranes, PTFE (Toyo, Japan, code: J020A330R) and PVDF (GE, USA, code: YMJWSP3001). The permeation fluxes were compared and correlated with the morphologies of the tested membranes.
    關聯: Membrane Water Treatment 5(1), p.41-56
    DOI: 10.12989/mwt.2014.5.1.041
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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