Sorption and transport of small gas molecules in thermally rearranged (TR) polybenzoxazole membranes based on 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane (bisAPAF) and 4,4â²-hexafluoroisopropylidene diphthalic anhydride (6FDA)
Keywords: Thermally rearranged; Polybenzoxazole; Dual mode sorption; Solubility coefficient; Solution diffusion model;