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.
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Chen, JL., Lu, MS., Huang, HM. et al. Chemical reactions, thermal and mechanical properties of epoxy — Polycarbonate blends cured with aromatic amines. J Polym Res 3, 177–184 (1996). https://doi.org/10.1007/BF01494528
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DOI: https://doi.org/10.1007/BF01494528