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    Abstract

Plasticiser Transportation Studies in NR and Acrylonitrile-butadiene Rubber 1. Diffusion Coefficient and Equilibrium Uptake of TBEP In NBR Vulcanisates
Faridah H.A.H, A.J. Tinker and A.S. Farid

The diffusion coefficients (D) of tributoxyethylphosphate in gum, white- and black-filled vulcanisates of acrylonitrile-butadiene rubber (NBR) determined by means of mass uptake measurements were observed to decrease as crosslink density increases. As filler level increases for black-filled vulcanisates of NBR at fixed sulphur and accelerator levels, D was observed to continuously decrease. D, on the other hand, was found to increase as filler level increases in white-filled vulcanisates of NBR at fixed sulphur and accelerator levels. These observations are explained in terms of degree of rubber-filler interaction.

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