Abstract
In a previous paper, a constitutive equation of relaxation behaviour of time-dependent chemically unstable materials has been developed by employing the irreversible thermodynamics of internal variables and Eyring's absolute reaction theory. In that paper, a theoretical expression for the effect of chemical crosslink density,v, on the relaxation rate has been developed. In this paper the creep behaviour of a network polymer undergoing a scission process has been developed. The temperature effect using the WLF equation on the coupled chemomechanical behaviour has also been incorporated into the equation.
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Peng, S.T.J. Constitutive equations of ageing polymeric materials. J Mater Sci 20, 1920–1928 (1985). https://doi.org/10.1007/BF01112273
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DOI: https://doi.org/10.1007/BF01112273