Abstract
A ternary solution of poly(styrene)-poly(methyl methacrylate)-benzene has been studied rheo-optically. Shear viscosity of the PS-PMMA solutions measured by a capillary measuring apparatus is well fitted by the Hashin’s blending rule. Flow birefringence Δn and orientation angle χ of the solution in the steady shear flow is measured by the phase modulated flow birefringence (PMFB) technique. By comparing the shear viscosities measured in a capillary apparatus with the optical data from the PMFB, the stress-optical coefficients of the solution and of the pure PS and PMMA solutions are obtained. In a blend state, the value of stress-optical coefficient is able to be predicted as a simple linear additive relation with the values of two pure polymer species and the compositions. The stress-optical law is turned out to be applicable to compatible PS-PMMA-benzene solution system.
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Lim, T., Chung, H. & Chung, I. Stress-Optical Coefficient of the Compatible Poly(styrene)-Poly(methyl methacrylate)-Benzene Solution System. Polym J 21, 763–769 (1989). https://doi.org/10.1295/polymj.21.763
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DOI: https://doi.org/10.1295/polymj.21.763