| Project/Area Number |
62550666
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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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 |
DOI Yoshiharu Research Laboratory of Resources Utilization, TIT, Associate Professor, 資源化学研究所, 助教授 (40016639)
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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 |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1988: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1987: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Living Coordination Polymerization / Living Polypropylene / Highly Active Vanadiun-Catalysts / Functional Polyolefins / ブロックポリマー / リビングポリオレフィン / 高活性配位重合触媒 / ポリプロピレンーポリ(メタクリル酸メチル)ブロック共重合体 / リビングEPR |
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| Research Abstract |
The structure of active center involving a living polypropylene chain has been studied by ^1H and ^<13>C NMR analysis. The majority of active centers is found to exist as secondary vanadium-carbon bond during the chain propagation. The living polypropylene end of vanadium-carbon bond reacts with some additives such as I_2 and CO to give terminally functionalized polypropylenes. In addition, this new type of living polypropylene has been applied to the synthesis of welldefined block copolymers of PP-EPR-PP, PP-PTHF, PP-PMMA, and PP-PS. The block copolymers of PP-EPR and PP-EPR-PP are prepared by the sequential coordination polymerization of propylene and ethylene. The PP-PTHF and PP-PMMA block copolymers are synthesized by the transformation of living polypropylene end to cationic or radical end which initiates the polymerization of THF or MMA. The block copolymer of PP-PTHF is prepared by the coupling reaction between iodineterminated polypropylene and living polystyrene anion.
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