Melt rheology and morphology of polymer blends

Abstract

Sizes and shapes of the component phases of immiscible polymer blends are strongly influenced by the viscoelastic properties of each component. For mixtures of different poly(ethylene terephthalate)s and polyamide-6 it can be established that the morphology under shear is the result of the viscosity ratio, which determines the size of the droplet-phase, and of the difference in the component elasticities affecting the shape of the dispersed phase.