Abstract
The kinetics of crystallization in rubber at low temperatures is studied macroscopically by means of small strain modulus measurements. This technique is very sensitive to small changes in crystallinity and is used to characterize the induction period, growth rate and equilibrium semi-crystalline state for rubber with various constant pre-strains. The effect of pre-strain in simple shear between 20% and 400% is described, as well as the effect of compressive pre-strain between 10% and 70%. A single empirical relationship is discovered between the Avrami growth rate exponent and a parameter characterizing pre-strain for shear, compressive and tensile modes of deformation and for all temperatures.
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