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Abstract
The effect of a commercial styrene/butadiene/styrene-based compatibilizer (Styroflex) on the tensile and impact properties of ternary blends of poly(acrylonitrile-co-butadiene-co-styrene) (ABS), high impact poly(styrene) (HIPS) and poly(ethylene terephthalate-co-cyclohexanedimethanol terephthalate) (PETG) was investigated. The tensile yield strengths and the moduli of the blends were of similar magnitude as the parent polymers. However, notched Charpy impact properties showed significant deviations with high synergy in ABS/PETG blends and strong antagonism in HIPS/PETG blends. Addition of Styroflex improved the impact properties of all blends containing HIPS and ABS. Dynamic mechanical analysis studies confirm the phase separated nature of ABS/PETG binary blends.
ACKNOWLEDGMENT
Financial support for this research from the Institutional Research Development Programme (IRDP) of the NRF, the Leibniz-Institute of Polymer Research, the University of Pretoria and Xyris Technology is gratefully acknowledged.
Notes
a 220°C/10 kg.
b 200°C/5 kg.
A: Compounded samples; B: Directly molded mixtures; D: 100 (A – B)/A.
