淡江大學機構典藏:Item 987654321/60360
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62805/95882 (66%)
造访人次 : 3901640      在线人数 : 275
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU 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


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/60360


    题名: Effect of postcasting heat-treatment on the structure and properties of semicrystalline phase-inversion poly(vinylidene fluoride) membranes
    作者: Lin, Dar-Jong;Chang, Hsu-Hsien;Konstantinos Beltsios;Don, Trong-Ming;Jeng, Yi-Su;Cheng, Liao-Ping
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: annealing;melting point;membranes;microstructure;X-ray
    日期: 2009-10
    上传时间: 2011-10-13 22:30:49 (UTC+8)
    出版者: Hoboken: John Wiley & Sons, Inc.
    摘要: Microporous PVDF membranes were prepared by immersion-precipitation in 1-octanol of casting dopes dissolved at different temperatures, with dissolution temperature affecting strongly the membrane microstructure. The effect of postcoagulation thermal annealing, which is an additional thermal parameter, on membrane microstructure and properties is probed herein. Membranes obtained were annealed at temperatures up to 160 °C, which is close to the melting point of PVDF polymer. Annealing leads to a substantial modification of the nano-scale fine structure of the membranes, while the overall-microporous structure is preserved. At elevated annealing temperatures, nano-grains, fibrils, and stick-like crystalline entities gradually eclipse, while globules develop more robust connections based on wide bands of crystal elements. Probing by X-ray diffraction and dynamic scanning calorimetry shows that crystallinity increases when annealing temperature and time are increased. As regards mechanical properties, the tensile strength of the membranes can be enhanced substantially, up to about 10 times, upon appropriate high temperature prolonged annealing.
    關聯: Journal of Polymer Science Part B: Polymer Physics 47(19), pp.1880–1893
    DOI: 10.1002/polb.21791
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

    文件中的档案:

    档案 大小格式浏览次数
    index.html0KbHTML312检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

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