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Rheological studies of the poly(styrene‐ co ‐acrylonitrile) and poly(vinyl chloride‐ co ‐vinyl acetate) blends
Author(s) -
Das Gaurab,
Banerjee A. N.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980926)69:13<2577::aid-app7>3.0.co;2-7
Subject(s) - vinyl acetate , acrylonitrile , vinyl chloride , materials science , styrene , rheology , polymer chemistry , shear rate , viscosity , melt flow index , acrylonitrile butadiene styrene , composite material , shear thinning , chemical engineering , copolymer , polymer , engineering
The rheological studies of the poly(vinyl chloride‐ co ‐vinyl acetate) and poly(styrene‐ co ‐vinyl acetate) and poly(styrene‐ co ‐acrylonitrile) blends were performed by a Brabender Rheotron at three different temperatures and also at different shear rates. Flow curves of the blends at different temperatures were drawn. The flow behavior index and, also, zero‐shear viscosity of the blends at different temperatures were determined. From the flow curves, it has been found that as shear stress increases, melt viscosity decreases at all temperatures, indicating that pseudoplastic behavior and experimental values lies above the line of the log‐additivity value and below the line of the additivity rule of mixture. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2577–2583, 1998