淡江大學機構典藏:Item 987654321/44223
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    题名: Formation of particulate microporous poly(vinylidene fluoride) membranes by isothermal immersion precipitation from the 1-octanol/dimethylformamide/poly(vinylidene fluoride) system
    作者: 鄭廖平;Cheng, Liao-ping;Young, Tai-horng;Fang, Lin;Gau, Jy-jie
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: Poly(vinylidene fluoride);Phase diagram;Membrane
    日期: 1999-04
    上传时间: 2010-03-09 10:04:11 (UTC+8)
    出版者: London: Elsevier Ltd
    摘要: Phase diagrams were determined for poly(vinylidene fluoride) (PVDF) and a terpolymer of vinylidene fluoride, hexafluoropropylene, and tetrafluoroethylene (VDF/HFP/TFE) in solutions composed of 1-octanol and dimethylformamide at 25°C. From the measured gelation and liquid–liquid phase separation data, binary interaction parameters were computed using a modified Flory–Huggins theory. PVDF microporous membranes were then prepared by isothermal immersion precipitation processes in various doping conditions. The formed membrane exhibited a particulate morphology characterized by a uniform package of spherical particles of identical size. These particles were identified to be full spherulites of PVDF using scanning electron microscopy, differential scanning calorimetry and small angle light scattering techniques.
    關聯: Polymer 40(9), pp.2395-2403
    DOI: 10.1016/S0032-3861(98)00462-5
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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