화학공학소재연구정보센터
Journal of Polymer Science Part B: Polymer Physics, Vol.33, No.8, 1269-1280, 1995
Gas-Transport Through Ethylene-Acrylic Acid Ionomers
Transport properties of several gases in two ethylene-acrylic acid ionomers characterized by a different amount of acrylic acid groups and percentage of neutralization have been investigated. Sorption and permeation experiments have been performed with N-2, O-2, CO2, CH4, C2H6 and SF6 in the 25-65 degrees C range and with C3H8 only at 25 degrees C. Gas permeabilities, diffusivities, and solubilities were evaluated along with activation energies and heats of solution. Data obtained in the present investigation were compared to analogous results reported in literature for polyethylene to better highlight the effect of ionic aggregates on the gas transport mechanism.