ISSN:
1572-8935
Keywords:
Epoxy
;
Polycarbonate
;
Transesterification
;
Transamidation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Bisphenol-A polycarbonate (PC) has been incorporated into epoxy resin cured with 4,4′-diaminodiphenyl sulphone (DDS) and 4,4'-diaminodiphenyl methane (DDM). IR spectra reveal that transesterification and transamidation occur between the carbonate group of PC and the hydroxyl group of cured epoxy resin for the DDM-cured system, and that only transesterification occurs for the DDS-cured system. Scanning electron micrographs (SEM) show no evidence of phase separation in these cured systems, which is an indication of full miscibility between the bisphenol-A monomers and PC-oligomers with the copolymer network. The mechanical strength and glass transition temperature (Tg) fluctuate with PC content, whereas the flexural modulus shows a steadily increasing tendency.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01494528
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