Abstract

Abstract From the flow curves, the readings to be expected in the standard (shearing-disc) Mooney viscometer were calculated. These differ from the observed figures by about 15 per cent. The temperature dependence of the rate of flow is accounted for on the basis of the simple Eyring formula, and a value of 8.1 k. calorie per mole was obtained for the energy of activation involved in the flow process.

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