Rheology Reviews of the British Society of Rheology
Here recent progress towards a fundamental understanding of the rheology-morphology relationship in immiscible polymer blends is discussed. The behaviour of such materials, containing Newtonian components and subjected to simple shear flows is relatively well understood now. Hence the focus of the work will be on studies that try to incorporate more complex but also more realistic features in these materials. Firstly, the structure development in compatibilized blends will be examined. Secondly, the morphology generation in blends with viscoelastic components will be discussed. Thirdly, since blends are typically processed in mixing equipment in which the flow field is a complex combination of shear and elongation, the microstructural evolution in complex flow fields certainly merits some attention. Finally, the behaviour of polymer blends in confined geometries will be addressed.