INVESTIGATION OF THE MOLECULAR-TRANSPORT OF ALIPHATIC AND AROMATIC ESTERS INTO ENGINEERING POLYMER MEMBRANES

Molecular transport as manifested by sorption and diffusion of organic esters into engineering polymer membranes, viz. nitrile butadiene rub ber, styrene butadiene rubber, ethylene propylene diene terpolymer, ne oprene and natural rubber, has been investigated in the temperature ra nge 25-60-degrees-C by the sorption gravimetric technique. The sorptio n equilibrium for ethylene propylene diene terpolymer was lower than t hose of the other polymers with all the liquids. Diffusion and permeat ion coefficients were obtained for the polymer-solvent systems and the se follow Arrhenius type behaviour in the temperature range investigat ed.