| Project/Area Number |
12555269
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
高分子構造・物性(含繊維)
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| Research Institution | Kansai University |
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Principal Investigator |
URAGAMI Tadashi Kansai University, Faculty of Engineering, Professor, 工学部, 教授 (80067701)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIDA Shinji Lignyte Co. Ltd. Research Center, Section Chief (Researcher), EVセパレーション開発部, 係長(研究職)
TANAKA Yoshiaki Lignyte Co. Ltd. Research Center, Director (Researcher), EVセパレーション開発部, 部長(研究職)
MIYATA Takashi Kansai University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (50239414)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥8,500,000 (Direct Cost: ¥8,500,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2000: ¥4,900,000 (Direct Cost: ¥4,900,000)
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| Keywords | Dimethylsiloxanemacromonomer / Methylmethacrylate / Graft block copolymer membrane / Pervaporation / Evapomeation / Water permselective / Ethanol permselectivity / Porous Membrane / ポリジメチルシロキサン / 温度差制御気化浸透法 / 膜周辺温度 / ポリ[1-(トリメチルシリル)-1-プロピン] / 膜厚 / 膜性能 / ジメチルシロキサンマクロモノマー / メチルメタクリレート / グラフト共重合体膜 / ブロック共重合体膜 / 膜構造 / 凍結乾燥法 |
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| Research Abstract |
Graft copolymers (PMMA-g-PDMS) from dimethylsiloxane macromonomer (DMS) and methylmethacrylate (MMA) and block copolymer (PMMA-b-PDMS) from PDMS macroinitiator and MMA were synthesized as polymer membrane materials for ethanol permselective membrane of aqueous ethanol solutions. Permeation and separation characteristics for an aqueous solution of 10wt% ethanol of PMMA-g-PDMS and PDMA-b-PDMS membranes from these copolymers were significantly dependent on the DMS content in copolymer. The membranes from small amount of DMS were water permselective, but those from large amount of DMS showed ethanol permselective. The difference in these permselectivities could be attributed to morphology of microphase separated structure of the membrane. Continuous PDMS phase in PMMA-b-PDMS membranes was lamellar, and their ethanol permselectivity was higher than that of PMMA-g-PDMS membranes.
On the other hand, to prepare ethanol permselective membrane with high permeation rate, porous polymer membranes were prepared from PDMS emulsion using the freeze-dry method. When PDMS porous membranes were applied to the permeation and separation for aqueous ethanol solutions in temperature difference controlling evapomeation, these membranes were ethanol permselective and had high permeation rate. The temperature difference between the feed solution and membrane surrounding, and the pressure difference between the upstream side and the down stream side of the membrane significantly influenced both the ethanol permselectivity and permeation rate.
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