Abstract
A critical review of experimental research of development of phase morphology in stratified and disperse two phase flow of polymer melts. It is shown that in stratified flow, phase morphology variations are primarily caused by viscosity differences between the two phases. For disperse two phase flow, the phase morphology is strongly influenced by the interfacial tension as well as the viscosity ratio. This appears to be through the capillarity or Taylor number. Large interfacial tensions and Taylor numbers lead to coarse phase morphologies and phase growth under quiescent conditions. Compatibilizing agents may be interpreted in terms of reduction of interfacial tensions. Applications to polymer processing operations and interpretation of rheological properties are described.
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