Morphology, Properties and Stability of Thermoplastic Polymer Blends.

摘要

Blending of two polymers usually results in an immiscible two-phase mixture because of thermodynamic reasons. The properties of these blends are determined by the morphology, i.e. the size, shape and distribution of the blend components, and by the degree of compatibility between the two polymers. However, these blends often possess a non-equilibrium morphology and morphological changes are likely to occur during annealing or processing of the blends. The research described in this thesis has been focussed on studying the morphology, properties and stability of thermoplastic polymer blends. Special attention has been paid to the influence of a yield stress and of the rheological properties of the polymers on the morphology of the blends.