GAS-TRANSPORT PROPERTIES OF POLY(ARYLETHER BISSULFONE)S AND POLY(ARYLETHER BISKETONE)S

The transport properties of the poly(arylether bissulfone) based on bisphenol A (PBSF) and the poly (arylether bisketone) s based on bisphenol A (PBK) and bisphenol S (PBK-S) are reported at 35-degrees-C. Comparisons are made with the polysulfone and the polycarbonate also based on bisphenol A to determine the effect of the long, rigid bisketone and bissulfone groups on polymer properties. A direct comparison also is made between PBK and PBSF, which differ only by their ketone and sulfone groups. The bulkier sulfone group increases free volume and T(g) more than the ketone group. This results in higher solubility and diffusivity coefficients for the bissulfone versus the bisketone polymer, both of which contribute to higher permeability coefficients.