| Project/Area Number |
23750262
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Oyama National College of Technology |
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Principal Investigator |
NISHII Kei 小山工業高等専門学校, 物質工学科, 講師 (00552928)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | リビング重合 / イソプレン / ペンタジエン / cis-1,4-構造 / 触媒 / 1,4-cis構造 / 連鎖移動 / 官能基化 / 触媒効率 / ポリイソプレン |
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| Research Abstract |
In this study, for the catalytic synthesis of terminally functionalized elastomers with concomitant reinitiation of the growing polymer chain, we investigated the polymerization of isoprene (IP) in the presence of PhSiH3 or AlEt3 by a cationic yttrium complex which conducts highly active cis-1,4-specific living polymerization of IP. Unfortunately, the catalytic synthesis of terminally functionalized cis-1,4-polyIPs was not achieved with the present catalytic system. On the other hand, we examined the potential of the scandium catalysts for the polymerization of (E)-1,3-pentadiene (PD). The living isospecific-cis-1,4-polymerization and block-copolymerization of PD with 1,3-butadiene have been achieved for the first time by using a half-sandwich scandium catalyst.
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