Abstract
The characteristics of limited dissolution of liquids in polymers in the highly elastic state are formulated. A rigorous expression was obtained for the rate of the change in the average degree of swelling of the elastomer in the form of an unlimited plate of arbitrary thickness with a linear law of distribution of the driving force of the process in it, equal to the difference in the chemical potentials of the diffusant in and outside of the polymer matrix. Calculation of the diffusion coefficient of a low-molecular-weight liquid in a polymer based on data on the swelling kinetics is only possible when very thin samples are used, where the gradient of the driving force of the process over the thickness of the material approaches zero.
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