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Miscibility behaviour of blends of a thermoplastic polyester polyurethane with vinyl polymers
Author(s) -
Danait Achala,
Deshpande Dinkar D.
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991480137
Subject(s) - miscibility , materials science , polyvinyl chloride , polyester , vinyl acetate , polyurethane , polyvinyl acetate , vinyl chloride , polymer blend , polymer , copolymer , thermoplastic polyurethane , polymer chemistry , composite material , chemical engineering , elastomer , engineering
A method based on the intrinsic viscosities of transfer has been used to predict miscibility of polymer blends. This method has been applied to study the change in the phase behaviour of a microphase separated polyester polyurethane (PSPU) on blending with polyvinyl chloride (PVC), polyvinyl acetate (PVAc) and a vinyl chloride‐vinyl acetate copolymer (VCVAc). The PVC/PSPU blends are found to exhibit complete miscibility over the entire composition range. PVAc/PSPU blends show immiscibility while VCVAc/PSPU blends show partial miscibility. Thermal analysis and scanning electron microscopic studies of the blend films have confirmed the results evaluated on the basis of the viscosity method.