Abstract
Data are presented for the moisture absorption by a thermoplastic elastomer which consists of a segregated polystyrene glassy phase in a rubbery matrix at 96% relative humidity. The initial stages appear to be Fickian in character but deviate in the final stages. A simple analytical model to describe the diffusion process which occurs in a two-phase resin system has been developed and applied to this system. In this model the moisture absorption characteristics of the dense and less dense phases are determined, and a value for the volume fraction of the dense phase estimated. In Part 2 the analysis is applied to a cured styrenated polyester resin.
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Jacobs, P.M., Jones, F.R. Diffusion of moisture into two-phase polymers. J Mater Sci 24, 2331–2336 (1989). https://doi.org/10.1007/BF01174492
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DOI: https://doi.org/10.1007/BF01174492