標題: Epoxy-polycarbonate blends catalyzed by a tertiary amine .1. Mechanism of transesterification and cyclization
作者: Li, MS
Ma, CCM
Chen, JL
Lin, ML
Chang, FC
應用化學系
Department of Applied Chemistry
公開日期: 15-一月-1996
摘要: In the Bisphenol A base polycarbonate-Bisphenol A base epoxy blend system, the carbonate group can react with epoxide in the presence of a tertiary amine. The transesterification reactions convert the original aromatic/aromatic carbonate of PC to aromatic/aliphatic and aliphatic/aliphatic carbonates. IR spectroscopy shows an unknown major structure formed during the later stages of the transesterification reaction. The unknown structure was investigated by a model reaction using diphenyl carbonate and phenyl glycidyl ether leading to the formation of 4-(phenoxymethyl)-1,3-dioxolan-2-one (PMD), which has been identified by IR, UV, H-1 NMR, C-13 NMR, and mass spectroscopy. The mechanism of forming the cyclic carbonate is proposed to proceed through a zwitterion and a nucleophile attack of the aromatic/aliphatic or the aliphatic/aliphatic carbonate group.
URI: http://dx.doi.org/10.1021/ma950978u
http://hdl.handle.net/11536/1501
ISSN: 0024-9297
DOI: 10.1021/ma950978u
期刊: MACROMOLECULES
Volume: 29
Issue: 2
起始頁: 499
結束頁: 506
顯示於類別:期刊論文


文件中的檔案:

  1. A1996TQ37900001.pdf