Abstract
An early stage of phase separation by spinodal decomposition in mixtures of poly(vinyl ethylene-co-1,4-butadiene) with 70.4 wt% vinyl ethylene content (V-BR (70.4)) and a rosin resin (Gumrosin X) was investigated by light scattering technique. The V-BR (70.4)/Gumrosin X mixture was found to exhibit lower critical solution temperature (LCST) behavior. The time evolution of scattered intensity was followed as a function of temperature jump, so that the linearized Cahn-Hilliard’s theory was reasonably applied to the spinodal decomposition. As a result of detecting the spinodal decomposition, we predicted that a pressure sensitive adhesive property is related to the phase dispersed structure induced by jumping temperature over the LCST.
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Kawahara, S., Akiyama, S. Adhesive Property and Phase Separation of Poly(vinyl ethylene-co-1,4-butadiene) with Rosin Resin Mixtures. Polym J 23, 47–54 (1991). https://doi.org/10.1295/polymj.23.47
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DOI: https://doi.org/10.1295/polymj.23.47