مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

The compatibilization effect of a hyperbranched poly(amide-ester) (HBP) on poly(acrylonitrile-butadiene-styrene)/poly(vinylchloride) (ABS/PVC) blends was examined. The effects of the amounts of HBP on mechanical properties of ABS/PVC (80/20, mass ratio) blends were investigated. The results showed that a small quantity of HBP had a significant effect on mechanical properties and can improve the compatibility of the ABS/PVC blends; the tensile strength of the ABS/PVC (80/20) blends reached to a maximum value when HBP content increased to 2 phr and then dropped quickly by adding more HBP, the impact strength of the ABS/PVC (80/20) blend decreased with incorporation of HBP, the higher HBP added, the greater impact strength of ABS/PVC blend decreased. The scanning electron microscopy indicated that the surfaces ofABS/PVC blends were mainly composed of separate tiny droplets and some cavities. When HBP was introduced into ABS/PVC (80/20) blends, the asperity of the surface decreased, and shear band began to form either partially or completely. DSC Analysis also confirmed that HBP could improve the compatibility of the ABS/PVC blends.