Diffusion of Heavy Oil in a Swelling Elastomer
- 1 May 1986
- journal article
- Published by Rubber Division, ACS in Rubber Chemistry and Technology
- Vol. 59 (2) , 233-240
- https://doi.org/10.5254/1.3538196
Abstract
The swelling of SBR by an aromatic oil has been experimentally studied at temperatures ranging from ambient to 200°C with thermally stable networks. A model based on Fick's law was developed, and the change of geometry of the elastomer sample was taken into account. The proposed approach is global or macroscopic, and a constant diffusion coefficient has been defined. The diffusion number, ND, defined by two characteristics of a solvent-polymer system, tf the swelling time and tD the diffusion time, represents an important result for engineering applications; it allows prediction of the behavior of amorphous elastomers in contact with a diffusing organic liquid.Keywords
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