English  |  正體中文  |  简体中文  |  Items with full text/Total items : 17775/20116 (88%)
Visitors : 9522959      Online Users : 330
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/28494

    標題: A study on high-performance composite membranes comprising heterogeneous polyamide layers on an electrospun substrate for ethanol dehydration
    作者: Hung, Wei-Song
    Lai, Cheng-Lee
    An, Quanfu
    De Guzman, Manuel
    Shen, Tai-Jung
    Huang, Yun-Hsuan
    Chang, Kuei-Chien
    Tsou, Chi-Hui
    Hu, Chien-Chieh
    Lee, Kueir-Rarn
    貢獻者: 環境工程與管理系
    關鍵字: Heterogeneous polyamide
    Dynamic interfacial polymerization
    Positron annihilation lifetime spectroscopy
    Free volume
    日期: 2014-11
    上傳時間: 2015-05-06 21:18:18 (UTC+8)
    出版者: Elsevier Science Bv
    摘要: We fabricated a novel high-performance pervaporation membrane for ethanol dehydration through interfacial polymerization integrated with spin-coating, a method we called dynamic interfacial polymerization. Varying amine and ac-yl chloride monomers were used to assemble heterogeneous polyamicle layers on an electrospun polyacrylonitrile substrate. The performance of the composite membrane comprising a highly crosslinked top layer surpassed that of the commercial PERVAP 2210 membrane: the permeation flux (13.9 kg/m(2)h) was eight Limes higher and the separation factor (4491) 19 Limes. It also exhibited stability during the peryaporation operation for 20 clays. Positron annihilation lifetime spectroscopy indicated the effect of the layers' free volume on the membrane performance. Doppler broadening energy spectroscopy gave information on interfacial defects. We also investigated the performance of composite membranes with homogeneous layers; despite assembling five homogeneous layers, the permeate concentration reached only up to 93.7 wt% water. (C) 2014 Elsevier B.V. All rights reserved.
    關聯: Journal of Membrane Science, v.470, pp.513-523
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in CNU IR are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback