engleski

Effect of Compatibilizer on Morphology and Mechanical Properties of SAN/EPDM Blends

Miscibility of styrene-acrylonitrile (SAN) and ethylene-propylene-diene (EPDM) blends containing high impact polystyrene (HIPS) as compatibilizer were studied. Blends were characterized by determination of mechanical properties, glass transition temperatures and their morphology was inspected by scanning electronic microscopy, SEM. Further on, blends were separated on its components to clarify the extrusion process and obtained components were characterized by FTIR spectroscopy and by gel permeation chromatography, GPC. It was observed that significant fraction of in situ formed graft copolymer is formed during the extrusion, which contributes to the homogeneity of the studied systems. The results show finer morphology and size reduction of the dispersed phase due to enhanced interface adhesion in compatibilized blends, which is followed by enhanced mechanical properties.

styrene-acrylonitrile; ethylene-propylene-diene monomer; compatibility; mechanical properties; morphology

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