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Effect of blending sequence on the impact strength of PET/PC blends

Authors Wu, Jingshen View this author's profile
Mai, Yiuwing
Issue Date 1998
Source Key engineering materials , v. 145-9, (Part 1&2), 1998, p. 787-792
Summary The impact behavior of PET/PC/E-GMA-MA blends at different temperatures was studied. The relationships between the processing conditions, morphology and mechanical properties were discussed. It was revealed that the toughening effect due to the E-GMA-MA copolymer appears at just above its glass transition temperature, and the blending sequence has a strong influence on the morphology and impact toughness of the blends. The brittle-ductile transition of the blends made under optimum processing conditions takes place at a relatively low temperature and with a low elstomer content. The major toughening mechanisms were identified to be massive cavitation plus matrix shear yielding. Both SEM and TEM were employed to study the morphology and toughening mechanisms.
Note This work is supported by Hong Kong Research Grants Council (Project No. HKUST810/96E).
ISSN 1013-9826
Language English
Format Article
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