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The viscosty and the recoverable shear compliance of poly(viny chloride)/dioctyl phthalate systems are studied at different temperatures and concentrations. The recoverable shear compliance is determined by the method of the stress relaxation after cessation of flow in a Couette flow viscosimeter. The results show the existence of a concentration dependent critical temperature T c which separates two different flow regions.
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Santamaría et al. (1985) studied this question.
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