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Abstract
Abstract Zero-shear viscosities of solutions of poly [2-methoxy-4,6-di(p, p′-isopropylidene diphenyloxy)-s-triazine] in chloroform were measured at various temperatures. The viscosity data were analyzed in terms of Martin's and Fedor's relationships. The temperature dependence of viscosities indicates that the apparent activation energy for viscous flow increases and the preexponential factor, related to activation entropy, decreases with concentration of polymer solution. The parameter Cm, related to volume fraction of polymer φm, was found to be linearly dependent on temperature. The viscosity-concentration data were generalized in terms of reduced variables.
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