| Project/Area Number |
62850155
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
高分子合成
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
ENDO Takeshi Res. Lab. of Resources Util., Tokyo Inst. of Tech., Professor, 資源化学研究所, 教授 (40016738)
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| Co-Investigator(Kenkyū-buntansha) |
小島 慎二 日本石油化学, 川崎事業所品質管理課, 課長
YOKOZAWA Tsutomu Res. Lab. of Resources Util., Tokyo Inst. of Tech., Res. Asso., 資源化学研究所, 助手 (80182690)
TAKATA Toshikazu Res. Lab. of Resources Util., Tokyo Inst. of Tech., Asso. Prof., 資源化学研究所, 助教授 (40179445)
KOJIMA Shinji Ukishima Plant, Nippon Petrochemicals Co., LTD., Manager
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| Project Period (FY) |
1987 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1988: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1987: ¥5,900,000 (Direct Cost: ¥5,900,000)
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| Keywords | Radical Ring-Opening Polymerization / Functional Group in Main Chain / New Functionalize Materials / Functionalization of Commercially Available Polymers / Radical Ring-Opening Polymerizable Monomers / 光分解性ポリマー / ラジカル開環性モノマー / ポリケトン |
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| Research Abstract |
We have investigated the copolymerization of commercially available vinyl monomers with radical ring-opening polymerizable monomers in order to develop new functionalized materials including the functional groups such as the ester group, ether group, and ketone group in the polymer backbone.
1. Syntheses of New Radical Ring-Opening Polymerizabel Monomers: (1) Radical polymerization of 2,2-Diphenyl-4-methylene-1,3-dioxolane (DPMD) was carried out to obtain poly(ketone) with a quantitative elimination of benzophenone. (2) Methylenecyclobutane underwent vinyl polymerization without ring-opening, whereas vinylcyclobutane did radical ring-opening polymerization to afford poly(1,6-hex-2-ene). (3) Vinylthiirane underwent radical polymerization with the ring-opening at the bond between carbon and sulfur atom, although carbon-carbon bond of the oxirane ring was cleaved in the polymerization of vinyloxirane. (4) Vinylcyclopropanes bearing functional groups such as the phenyl group, ester group, and cyano group were prepared, and all of them were found to undergo radical ring-opening polymerization.
2. Copolymerization: (1) Copolymerization of vinyloxirane with enhylene was carried out to obtain polyethylene bearing the vinyl ether groups in the polymer backbone. (2) Copolymerization of DPMD with enhylene afforded polyethylene containing the ketone and ether groups in the polymer backbone. (3) Copolymerization of DPMD with styrene was carried out to obtain polystyrene including the ketone groups in the polymer backbone. furthermore, the content of the ketone group in the polymer can be arbitrarily controlled by the change of DMPD's feed ratio. (4) DPMD can copolymerize also with other vinyl monomers such as N-vinyl-2 pyrrolidone, vinyl acetate, and methyl methacrylate to yield the corresponding copolymers including the ketone groups in the polymer backbone. Further investigation on physical propaties of these copolymers is in progress now.
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