Abstract

The cooperative diffusion constant D coop of end-linked poly(dimethylsiloxane) (PDMS) model networks and dicumyl peroxyde (DCP)-cured natural rubber (NR) was determined. Variations of D coop with cross-link density for both PDMS networks and DCP-cured NR approximately corresponded to the prediction expected from both the dynamic scaling law and the so called C* theorem. It is shown that the correlation length ξ calculated from D coop can be regarded as the mesh size of a swollen network

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