Gas permeabilities of poly(4-methyl-2-pentyne) membranes surface modified with carbon tetrachloride plasma

(1) The effect of CCl4 plasma treatment on O2, N2, H2, CO2 and CH4 permeabilities and selectivities of PMP membranes were investigated in detail. The selectivities of O2/N2, H2/N2, CO2/N2, CO2/CH4 and H2/CH4 improved remarkably while their permeabilities decreased. (2) The contact angle of water on the treated membranes was measured. The contact