An Investigation On The Extended Composite Droplet Morphology Of Ternary Blends

The morphology of two ternary blends was investigated. In all of the blends poly (ethyleneterephthalate) (PET), as the major phase, was blended with poly (propylene) (PP) and two grades of poly (ethyl-stat-vinylacetate) (EVA) with different viscosity and interfacial interaction. Theoretical model for two grade of EVA predicted positive spreading coefficient and lower free energy for the morphology with EVA as the shell and PP as the core. Effect of elsticities of different phases on prediction of dynamic interfacial energy (DIE) model was investigated by calculation of first normal stress difference. In composition of 70/15/15 coreshell type morphology for blend with high viscose EVA obtained but for blend with low viscose EVA co-continuous type morphology observed. With change in disperse phase composition of blend with low viscose EVA change in morphology investigated. Disperse phase droplet diameter and core diameter and shell thickness calculated and compared with binary blend.

Keywords:

Ternary Blends , Morphology , Core-Shell , Interfacial Tension , Viscosity , Elasticity