摘要 : The morphology evolution of polycarbonate-polystyrene (PC/PS), blends d.uring the compounding process in three blending methods of industrial relevance, name)y melt blending, re-melt blending in a twin-screw extruder and tri-melt ... 展开 The morphology evolution of polycarbonate-polystyrene (PC/PS), blends d.uring the compounding process in three blending methods of industrial relevance, name)y melt blending, re-melt blending in a twin-screw extruder and tri-melt blending in an injection-moulrlinl machine, was investigated using scanning electron microscopy (SEM) to examine nine blend compositions. Blends were prepared at compositions where phase inversion was expected to occur according to model predictions. The experimental results were compared to the .values of the point of phase inversion calculated with thesemi-empirical model. The results show thattheforrnation ofco-continuous morphology strongly depends on blend composition and melt blending method, whereas the model prediction for phase inversion deviates from the experimental values. Further, we found that the initial mechanism of morphology evolution invplves the forrnationof blades or stratifications in the continuous phase,These blades or stratifications became unstable due to the effects of flow and interfacial forces. We also found that fibre formarion in the dispersed phase was favoured by higher shear rate. 收起