Membrane Formation via Thermally-Induced Phase Separation from Polypropylene/Fatty Acids Systems.
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概要
- 論文の詳細を見る
Microporous polypropylene membranes were prepared via thermally-induced phase separation from mixtures of polypropylene/soybean oil, polypropylene/oleic acid, and polypropylene/linoleic acid. The phase diagram of each system was obtained by thermal analysis and cloud point measurements. It was proved that each system has a liquid-liquid phase separation region at concentrations less than the monotectic composition. A cellular structure was obtained for each system, which is the typical structure for liquid-liquid phase separation via slow cooling. Fine structure with tiny polypropylene spherulites was obtained via quenching process. Mobility of diluent was related with its rejection during the polypropylene spherulite formation. A melt spinning apparatus was designed to produce microporous hollow fiber membranes. The mechanical strength of the hollow fiber seemed to be related to solution viscosity. Polypropylene/soybean oil samples had much greater solution viscosity than the other systems, and formed fibril structures with enhanced mechanical strength.
- 日本膜学会の論文
著者
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Kim Sung
Dept. Of Chem. Eng. Korea Advanced Institute Of Science And Technology
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Hwang Jeong
Membrane Laboratory, The Korea Institute of Science and Technology
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Kim Un
Membrane Laboratory, The Korea Institute of Science and Technology
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Kim Jae-Jin
Membrane Laboratory, The Korea Institute of Science and Technology
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Kim Sung
Dept.of Chemical Engineering, Kyung Hee Universitv
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- Membrane Formation via Thermally-Induced Phase Separation from Polypropylene/Fatty Acids Systems.