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Thermal aging of bisphenol‐A polycarbonate/acrylonitrile–butadiene–styrene blends
Author(s) -
Guest M. J.,
van Daele R.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070551007
Subject(s) - polycarbonate , materials science , glass transition , izod impact strength test , acrylonitrile butadiene styrene , dynamic mechanical analysis , composite material , polymer , bisphenol a , polymer blend , miscibility , toughness , styrene , amorphous solid , epoxy , copolymer , ultimate tensile strength , chemistry , organic chemistry
Thermal aging of immiscible bisphenol‐A polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) blends containing 25, 60, and 75% PC and the PC and ABS blend components have been studied. Changes in Izod impact properties and dynamic mechanical spectra are reported following aging at 90, 110, and 130°C for times up to 1500 h. PC/ABS blends containing 60 and 75% PC were found to retain high impact performance following aging at elevated temperatures, compared to the PC blend component. Dynamic mechanical spectroscopy is an effective probe for investigating the structure–property changes occurring and the mechanisms of aging. For PC and ABS, the changes were mainly due to physical aging of the amorphous polymers when aged below the glass‐transition temperature. For the PC/ABS blends, oxidative degradation additionally contributes to loss of toughness. Although structure–property changes are related to the behavior of the blend components, additional factors of potential importance for multiphase polymer–polymer systems have been identified, including a redistribution of stabilizers during the blend manufacture. © 1995 John Wiley & Sons, Inc.