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The mutual coefficient of diffusion of the dicumyl peroxide (DCP), which diffuses into an ethylene–octene copolymer above its Tg was measured from an innovative rheological experiment. The experiments were carried out on a parallel plate geometry rheometer. The method is based on the cross-linking of a two-layer sample; the upper layer contains 2 wt% of DCP, and the lower layer is free of DCP. Actually,...
This paper is focused on two important features of the addition of a plasticizer (oil) into a polymer matrix: The influence of its concentration on the viscoelastic properties of the blend, and the diffusion mechanisms that take place during mixing. A rheological approach was chosen for its capacity to support relatively simple modeling.In the first part of the study, we demonstrate that the incorporation...
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