Rheology Behaviours of Miscible Amorphous Poly(3-hydroxybutyrate)/Poly(ethylene oxide)/Poly(p-vinylphenol) Blends

The Local Structure of Miscible Polymer Blends

1. Introduction The formation of miscible mixtures of two chemically dissimilar polymers is in general unfavourable. For many materials a single phase is never formed, while for others, the miscible state is only obtained at low temperatures. The classic description of the interaction between two polymers is via the Flory-Huggins theory (for example see [l]) in which x, the interaction paramete...

Surface segregation amplification in miscible polymer blends near criticality

– In atomic, small molecule or polymeric multicomponent materials, surface compositions naturally differ from the bulk because one component (or phase) will generally favor the surface region. Binary polymer blends represent a model system to investigate surface enrichment because segregation is enhanced by the small combinatorial entropy of mixing and amplified by chain connectivity (relative ...

Dynamic Heterogeneity in Fully Miscible Polymer Blends through Molecular Simulations

SUMMARY: The effect of self-concentration and intermolecular packing on the dynamics of polymer miscible blends is examined by extensive atomistic simulations. Direct information on local structure of the blend system allows a quantitative calculation of selfand effective composition terms at various length scales that are introduced to proposed models of blend dynamics. Through a detailed stat...

Rheology of Binary Polymer Blends under External Electric Fields

We investigate the relation between the structures of domains and the increase of stress under imposed electric field by performing simulations of the system composed of two kinds of fluids inserted between two plates of electrodes. It is found that the stress is significantly increased under applied electric fields as compared with the one of system under no external field. Under shear flows w...

Relationship between morphology and rheology of immiscible polymer blends