Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/21680
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 17776/20117 (88%)
Visitors : 10878065      Online Users : 448
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:

    Title: Synthesis and Properties of Poly(urethane-imide) Interpenetrating Network membrane
    Authors: Mei-Hui Tsai
    Shih-Liang Huang
    Shu-Jhuan Liu
    Chiou-Jey Chen
    Pei-Jyun Chen
    Shih-Hsiung Chen
    Contributors: 環境工程與科學系
    Keywords: Polyimide
    Gas separation
    Date: 2008-12
    Issue Date: 2009-10-05 14:12:56 (UTC+8)
    Abstract: 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.
    Relation: Desalination 233(1-3):p.191-200
    Appears in Collections:[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

    Files in This Item:

    File 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