A Contribution to the Theory of Viscous Flow Reactions for Chain-Like Molecular Substances

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Abstract
Ewell and Eyring investigated a relation for the coefficient of internal friction as a reciprocal reaction rate employing a large number of data. In this paper these investigations are extended to new data involving homologous series of higher esters. The variation of the activation heats of the flow process with temperature, molecular weight, and constitution, is considered and an attempt made to correlate it to the molecular constitution. There are indications that the above‐mentioned ideas contain implicitly through Stefan's theorem a relation between surface tension and viscosity.