Perforative transfert mechanism of water-ethylacetate system through PDMS membranes

This study concerns the transfer of the "water-ethylacetate" system, throug h a polymer material, the polydimethylsiloxane, at various degrees of retic ulation. From these experimental results, the transfer of matter can be exp ressed for small contents of ester, using the Fick law in which the diffusi on coefficient is constant. The absence of flux coupling is demonstrated by the fact that the water diffusion coefficient in the silicon giving accoun t of the global transfer in pervaporation, is identical to its measured val ue in pure water.