Articles you may be interested inThe accuracy of liquid-liquid phase transition temperatures determined from semiautomated light scattering measurements J. Chem. Phys. 133, 074506 (2010); 10.1063/1.3469778 Universality in eight-arm star polystyrene and methylcyclohexane mixtures near the critical point Two-fluid demixing theory predictions of stress-induced turbidity of polystyrene solutions in dioctyl phthalate Coexistence curve and turbidity of aqueous solutions of oligooxyethylene alkyl ether with the addition of urea near the critical pointWe report turbidity measurements for a series of solutions of polystyrene in methylcyclohexane with varying polymer molecular weights. The obtained correlation length and the osmotic compressibility shows power law dependence on both the reduced temperature t (ϭ͉T ϪT c ͉/T c ) and the molecular weights M w of the polymers. We find that the relations 0 (1 Ϫ c ) 0.85 ϰM w 0.18 , and 0 (1Ϫ c ) Ϫ1.20 ϰM w Ϫ0.09 proposed by An, Jiang, Chen, and Shen ͓Chem. Phys. Lett. 282, 403 ͑1998͔͒ can be used to describe the present experimental results. Moreover, these relations appear to be better suited than a simple scaling for extracting the M w -exponents. The exponents so obtained are found to be in excellent agreement with theoretical predictions.
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