2007 Fiscal Year Final Research Report Summary
Study of Network Polymer Having Movable Cross-Linking
| Project/Area Number |
18550109
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Mie University |
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Principal Investigator |
KUBO Masataka Mie University, Graduate School of Engineering, Associate Professor (70195494)
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| Project Period (FY) |
2006 – 2007
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| Keywords | Living Polymerization / Cyclic Polystyrene / Polypseudorotaxane / Nonbonding Cross-Linking / Movable Cross-Linking |
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| Research Abstract |
Free radical bulk polymerization of methyl methacrylate(MMA) was carried out in the presence of a macrocyclic amine based on cyclic polystyrene. The polymer changed to an insoluble solid upon heating at 180 ℃ in a vacuum. The insolubility is attributed to the in-situ formation of polypseudorotaxane, followed by the covalent fixation of the threaded ring segment with the linear chain to form noncovalent three-dimensional structure. We have demonstrated a novel synthetic pathway for noncovalent network of PMMA. The synthetic procedure involves in-situ formation of a polypseudorotaxane by free radical polymerization of MMA in the presence of a macrocyclic amine. Evidence for a polypseudorotaxane formation is indicated by GPC, ^1H NMR ; and photoluminescence measurements. Although the amount of the threaded macrocycles. (threading efficiency) remains obscure at this stage, it appears that the large size of macrocyclic amine based on cyclic polystyrene(ca. 60 atoms on average) is favorable for threading. By utilizing the solid-state thermal amidation reaction of the polypseudorotaxane, the covalent fixation of the threaded ring with linear chain results in noncovalent cross-linking to form three-dimensional network
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[Presentation] 環状高分子の固相合成2007
Author(s)
宮尾 あゆみ
Organizer
高分子学会年次大会
Place of Presentation
京都国際会議場
Year and Date
2007-05-30
Description
「研究成果報告書概要(和文)」より
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