Relationship Between Morphology and Rheology in Immiscible Polymer Blends

Due to immiscibility of the most polymer blends, the present article relies on review the theories and relation between morphology and rheology of immiscible polymer blends. The results of morphological investigation revealed that the ultimate structure of immiscible polymer blends relates to two parameters of viscosity ratio and capillary number. Capillary number connected to matrix viscosity, strain rate and interfacial tension as well. The other parameter which affects on drop break-up and morphology of polymer blends is type of flow. The outcomes indicated that droplet breaks-up in elongation flow easier than shear flow. The models of Palierne, Coran, Jarzebski and Doi- Ohta are very famous models in correlation between rheology and morphology of immiscible polymer blends. It was illustrated in Doi- Ohta model the more differences in first normal stresses of immiscible polymer blends the smaller of droplet size of dispersed phase. In Palierne model, the complex modulus of immiscible polymer blends relates to droplet diameter and interfacial tension.