Crosslinked Density Xc

Estimation of the crosslink density of a thermoset network can be obtained from the storage modulus values in the rubbery plateau region. In principle, the crosslink density of a cured thermoset network could be calculated from the theory of rubber elasticity. The shear modulus G of a crosslinked rubbery network is given by [33]  

M can be determined from the dynamic storage modulus value at a temperature at least 30 °C higher than the T. The details for determination of the dynamic modulus using dynamic mechanical analysis are given in Section I.9.6.3. 

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