Abstract
For liquid mixture of polystyrene (PS) and poly(methylphenylsiloxane), we determined cloud points, glass transition temperatures of the homogeneous blends, and the compositions of phases separated at various temperatures in the two-phase region. In this system, phase separation and glass transition occur in ranges of comparable temperature. For this characteristic, one of the separated phases, which was rich in PS, did not reach equilibrium compositions but approached quasi-equilibrium compositions. A theory has been developed to examine the effect of the settling-down of one phase to a quasi-equilibrium composition on the composition of the conjugate phase.
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Nojima, S., Nose, T. Quasi-Equilibrium in the Mixture of Polystyrene and Poly(methylphenylsiloxane). Polym J 14, 269–275 (1982). https://doi.org/10.1295/polymj.14.269
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DOI: https://doi.org/10.1295/polymj.14.269
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