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Criteria for rheological compatibility of polymer blends
Author(s) -
Han Chang Dae,
Chuang HsiaoKen
Publication year - 1985
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/app.1985.070301118
Subject(s) - materials science , polymer blend , polystyrene , rheology , dynamic mechanical analysis , copolymer , polymer , compatibility (geochemistry) , styrene , acrylonitrile , compatibilization , composite material , methyl methacrylate , polymer chemistry , miscibility
Criteria for rheological compatibility of polymer blends are suggested. The criteria suggested make use of plots of first normal stress difference ( N 1 ) against shear stress (σ 12 ), and of storage modulus ( G ′) against loss modulus ( G″ ). Compatible blend systems considered are (1) blends of two different grades of low‐density polyethylene, (2) blends of poly(vinylidene fluoride) and poly(methyl methacrylate), (3) blends of poly(2,6‐dimethyl‐1,4‐phenylene oxide) and polystyrene, and (4) blends of poly(styrene‐co‐acrylonitrile) and poly(styrene‐co‐maleic anhyride). And incompatible blend systems considered are (1) blends of nylon 6 and poly(ethylene‐co‐vinyl acetate) and (2) blends of nylon 6 and an ethylene‐based multifunctional polymer. It has been found that plots of N 1 vs. σ 12 and G ′ vs. G ″ give (a) temperature‐independent correlations for both compatible and incompatible blend systems; (b) composition‐independent correlations for compatible blends; (c) composition‐dependent correlations for incompatible blends.