DIFFUSIVITY, PERMEABILITY, AND SORPTIVITY OF ALIPHATIC-ALCOHOLS THROUGH POLYURETHANE MEMBRANE AT 25-DEGREES-C, 44-DEGREES-C, AND 60-DEGREES-C

Diffusivity, permeability, and sorptivity of eight aliphatic alcohols through a commercially available polyurethane membrane at 25, 44, and 60 °C have been determined. Thermodynamic quantities such as enthalpy and entropy changes tor sorption processes have been calculated from equilibrium sorption data. The Arrhenius parameters for the process of diffusion, permeation, and sorption have also been estimated. The experimental results and computed quantities are discussed In terms of the nature of polymer-penetrant interactions. © 1990, American Chemical Society. All rights reserved.