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dc.contributor.authorLi, MSen_US
dc.contributor.authorMa, CCMen_US
dc.contributor.authorLu, MSen_US
dc.contributor.authorLin, MLen_US
dc.contributor.authorChang, FCen_US
dc.date.accessioned2014-12-08T15:02:13Z-
dc.date.available2014-12-08T15:02:13Z-
dc.date.issued1996-11-30en_US
dc.identifier.issn0887-624Xen_US
dc.identifier.urihttp://hdl.handle.net/11536/913-
dc.description.abstractThe reaction of oxirane with carbonate using quarternary ammonium salts as catalyst has been studied. Curing is caused by the transesterification reaction of the oxirane cycle with the carbonate group that proceeds by an ''insertion'' mechanism in the stoichiometric system. The ratio of the reactants is two oxirane groups to one carbonate group. In the nonstoichiometric system, the epoxide content is more than the stoichiometric quantity required. A cyclization reaction is followed by the transesterification reaction. To identify the finished products, a model reaction was proposed using diphenyl carbonate and phenyl glycidyl ether which results in the formation of 4-phenoxymethyl-1,3-dioxolane-2-one (PMD). The mechanism of forming the cyclic structure is assumed to proceed through the chain scission of the network in which the molecular chain crosslinked with carbonate group by a transesterification reaction. (C) 1996 John Wiley & Sons,Inc.en_US
dc.language.isoen_USen_US
dc.subjectepoxyen_US
dc.subjectblenden_US
dc.subjectpolycarbonateen_US
dc.subjecttransesterificationen_US
dc.subjectcyclizationen_US
dc.titleMechanism of transesterification and cyclization of epoxy-polycarbonate blends catalyzed by quarternary ammonium salten_US
dc.typeArticleen_US
dc.identifier.journalJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRYen_US
dc.citation.volume34en_US
dc.citation.issue16en_US
dc.citation.spage3303en_US
dc.citation.epage3312en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
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