Structures and properties of polycarbonate-modified epoxies from two different blending processes

doi:10.1002/(SICI)1097-4628(19991205)74:10<2510::AID-APP20>3.0.CO;2-P

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/60144

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题名:	Structures and properties of polycarbonate-modified epoxies from two different blending processes
作者:	Don, Trong-ming;Yeh, Chao-hsien;Bell, J. P.
贡献者:	淡江大學化學工程與材料工程學系
关键词:	polycarbonate;epoxy;solution-blending process;melt-blending process;fracture toughness
日期:	1999-12
上传时间:	2011-10-13 13:05:22 (UTC+8)
出版者:	Hoboken, NJ: John Wiley & Sons
摘要:	It has been proved in our previous study that during the melt-blending of an epoxy oligomer based on the diglycidyl ether of bisphenol-A (DGEBA) with polycarbonate (PC) at 200°C, the secondary hydroxyl groups in the DGEBA react with the carbonate groups in PC through transesterification, resulting in degraded PC chains with phenolic end groups and also in PC/DGEBA copolymers. Yet, in the same study, it was found that the prereactions between DGEBA and PC can be minimized or eliminated if a solution-blending process was used. Therefore, it was expected that, after being cured with a curing agent, different epoxy-network structures should result as a consequence of the two different premixing processes of DGEBA and PC. In addition, we also expect that in the melt-blending process, the fracture toughness of epoxies should be increased due to the incorporation of ductile PC chains into the epoxy network. In this study, therefore, we attempted to examine and compare the structures and properties of PC-modified epoxies through these two different blending processes.
關聯:	Journal of applied polymer science 74(10), pp.2510-2521
DOI:	10.1002/(SICI)1097-4628(19991205)74:10<2510::AID-APP20>3.0.CO;2-P
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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