Melt blends of SAN with SAN‐graft‐polybutadiene (PB)

摘要

AbstractMelt blends of SAN with SAN‐graft‐polybutadiene (PB) (g‐ABS) were prepared in a Brabender plasticorder. The effect ofg‐ABS on the morphology and mechanical and viscoelastic properties of the blends was studied up to 60 wt g‐ABS. The brittle‐tough (BT) transition occurred around 20 wt g‐ABS, and the viscosity increased monotonically withg‐ABS, showing yield behavior at ≥ 20. The lower and higher glass transition temperatures (Tg) ofg‐ABS, each corresponding to theTgof PB and grafted SAN, decreased and increased with the addition of free SAN, and this was interpreted in terms ofgraftSAN—PB phase separation. © 199