scispace - formally typeset
Search or ask a question

Showing papers in "The Journal of Physical Chemistry in 1965"












Journal ArticleDOI
TL;DR: In this article, the most important refractive index mixture rules used for determining the refractive indices of a solute are scrutinized regarding their relative merits and interrelations, and the results are in line with expectation on the basis of theoretical analysis.
Abstract: : The most important refractive index mixture rules used for determining the refractive index of a solute are scrutinized regarding their relative merits and interrelations. The Dale-Gladstone and the Biot-Arago equation are found to follow from either the LorentzLorenz equation or the Wiener equation if the solution is dilute and if, in addition, the refractive indices of solute and solvent are nearly the same. A mixture rule proposed by the writer represents the limiting form of the Wiener equation in case of dilute solutions without restriction as to the value of the refractive indices. The performance of all equations is tested on literature data. The results are in line with expectation on the basis of theoretical analysis. The special case of solutes of colloidal dimensions, where none of the equations applies satisfactorily, is briefly discussed. (Author)



Journal ArticleDOI
TL;DR: In this article, the temperature dependence of viscoelastic behavior of polystyrene was analyzed in terms of creep and recovery behavior, and the results showed that the visco-elastic properties of poly styrene are independent of the temperature.
Abstract: Temperature dependence of viscoelastic behavior of polystyrene analyzed in terms of creep and recovery behavior