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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/26997

    標題: Preparation and characterization of plasma-modified PTFE membrane and its application in direct contact membrane distillation
    作者: Lai, Cheng-Lee
    Liou, Rey-May
    Chen, Shih-Hsiung
    Huang, Guan-Wei
    Lee, Kueir-Rarn
    貢獻者: 環境工程與科學系
    關鍵字: PTFE
    日期: 2011-02
    上傳時間: 2013-10-16 09:08:57 (UTC+8)
    出版者: Elsevier
    摘要: Plasma-modified polytetrafluoroethylene (PTFE) membranes for use in membrane distillation were prepared with composite PTFE membranes. The composite membrane consisted of a porous woven support and a dense PTFE layer. The membranes were characterized using different technologies such as SEM, AFM, and contact angle measurement. Finally, the plasma-modified membranes were tested for their performance in the process of desalination by means of the direct contact membrane distillation (DCMD). It was found that the plasma treatment strongly affects the surface hydrophilicity of the membranes and thus enhanced their desalination performance. It was also found that prolonging the plasma treatment time and increasing the plasma power significantly decreased the water contact angle and significantly changed the surface morphology of the modified membranes. Furthermore, the plasma treatment only slightly changed the roughness and surface porosity. Such changes in the surface's morphology and polarity enhanced the hydrophilicity of the modified membranes and then significantly improved the permeation flux but expectedly decreased the salt rejection.
    關聯: Desalination, 267(2-3), pp.
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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