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The rheological properties of blends of poly(methyl methacrylate) (PMMA) and polystyrene (PS), forming two phases in the molten state, were measured using cone-and-plate and capillary rheometers. For the PS/PMMA blends, we have found that logarithmic plots of steady shear viscosity versus shear rate obtained by a cone-and-plate rheometer do not overlap those obtained by a capillary rheometer, whereas...
The steady shear viscosities of two microphase-separated triblock copolymers, a polystyrene-block-polybutadiene-block-polystyrene copolymer (Kraton 1102) and a polystyrene-block-polyisoprene-block-polystyrene copolymer (Kraton 1107), were measured at various temperatures, using a cone-and-plate rheometer at low shear rates (ca. 0.01–10s −1 ) and a capillary rheometer at high shear rates (ca...
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