Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/21680
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 17776/20117 (88%)
造访人次 : 10938660      在线人数 : 148
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    標題: Synthesis and Properties of Poly(urethane-imide) Interpenetrating Network membrane
    作者: Mei-Hui Tsai
    Shih-Liang Huang
    Shu-Jhuan Liu
    Chiou-Jey Chen
    Pei-Jyun Chen
    Shih-Hsiung Chen
    貢獻者: 環境工程與科學系
    關鍵字: Polyimide
    Gas separation
    日期: 2008-12
    上傳時間: 2009-10-05 14:12:56 (UTC+8)
    摘要: Poly(urethane-imide) (PUI) membranes are prepared by blending polyurethane (PU) prepolymer with different ratio of poly(amide acid) (PAA). PU prepolymer are synthesized by two-stages process with hydroxyl-terminated polybutadiene (HTPB), 4,4´-dicyclohexylmethane diisocyanate (H12MDI) and 1,4-butane diol (1,4-BD). While 4,4´-diaminodiphenyl ether (ODA) and 3,3´–4,4´-benzophenonetetracarboxylic dianhydride (BTDA) are reacted to forming the polyimide (PI) oligomer solution of poly(amide acid) (PAA). IPN structures are formed through reaction between PU prepolymer and PAA and unsaturated CC double bond between different HTPB segment of PU. All PUI membranes show three steps of weight loss curves and PI shows one step weight loss curve by thermogravimetric analysis (TGA). Compositions lower than 50 wt.% of PU content (0.5-PUI) possess better compatibility between PU and PI and the glass transition temperature of PU hard segment (Tgh) of PUI membranes disappeared. The Tgh values, maximum degradation temperature and char yield of PUI membranes are increased as the increase of PI content. The gas permselectivities of 0.5-PUI are 12 times than that of pure PI.
    關聯: Desalination 233(1-3):p.191-200
    显示于类别:[環境工程與科學系(所)] 期刊論文


    档案 大小格式浏览次数

    在CNU IR中所有的数据项都受到原著作权保护.


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