| Project/Area Number |
17350056
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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 | 一般 |
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| Research Field |
Polymer chemistry
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MASUDA Toshio Kyoto University, Graduate School of Engineering Department of Polymer Chemistry, Professor, 工学研究科, 教授 (60026276)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2006: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2005: ¥9,600,000 (Direct Cost: ¥9,600,000)
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| Keywords | Polymer Synthesis / Substituted Polyacetylene / Superglassy Polymer / Na no Materials / Environmental Material / Gas Permeabiliry |
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| Research Abstract |
1) Synthesis of Super-Glassy Halogen-Containing Poly(diphenylacetylenes)
Poly(diphenylacetylenes) having trimethylsilyl groups and halogens were synthesized and gas permeabilities of the free-standing membranes of these polymers were investigated. The membranes of resultant polymers exhibited very high gas permeability, which can be called super-glassy polymers, and these PO_2 reached more than 2000. barrers. In particular, the gas permeability of chlorine-containing poly(diphenylacetylene) showed four times as large values as those without chlorine.
2) Synthesis of Hydroxy-Containing poly(diphenylacetylenes) for CO_2 Separation Membranes by Desilylation
Poly(diphenylacetylenes) bearing polar functional groups could not be obtained due to the deactivation of polymerization catalysts. However, we achieved the synthesis of hydroxy-containing poly(diphenylacetylenes) using the desilylation (protection/deprotection) method. Poly(diphenylacetylenes) having fluorines and hydroxy groups were also synthesized by using this method. The membranes of the hydroxylated poly(diphenylacetylenes) exhibited outstanding CO2 permeability as well as separation performance for CO_2 against methane and nitrogen.
3) Effect of Fumed Silica Nanoparticles on the Gas Permeation Properties of Substituted Polyacetylene Membranes
Organic-inorganic hybrids and nanocomposites are a relatively new class of polymeric materials with improved properties compared to their neat materials. The gas permeability of three substituted polyacetylenes increased consistently with increasing content of nonporous fumed silica (FS) nanocomposites. The PO_2 value of poly(1-chloro-2-phenylacetylene) containing 30wt% FS was 86 barrers, which was 10 times that of the unfilled polymer.
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