Viscoelastic properties of polystyrene-polycarbonate blends in melt

Viscoelastic properties of polymer blend melts of polystyrene–polycarbonate were investigated in a wide range of temperatures, frequencies, and compositions. It was established that the more essential changes in viscoelastic characteristics took place at small concentrations of one of the components...

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Bibliographic Details
Published in:Journal of applied polymer science 1981-02, Vol.26 (2), p.499-508
Main Authors: Lipatov, Yu. S., Shumsky, V. F., Gorbatenko, A. N., Panov, Yu. N., Bolotnikova, L. S.
Format: Article
Language:English
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Summary:Viscoelastic properties of polymer blend melts of polystyrene–polycarbonate were investigated in a wide range of temperatures, frequencies, and compositions. It was established that the more essential changes in viscoelastic characteristics took place at small concentrations of one of the components and at low frequencies, probably because of a putting down of the slow relaxation processes. The marked decrease in the viscosity of the melts takes place in the region of phase separation due to thermodynamic incompatibility of the components and is in a good correlation with the appearance of excess free volume in the system.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1981.070260210