MODIFICATION OF GAS SEPARATION POLIMER MEMBRANE BY PLASMA OF BARRIER DISCHARGE
This paper is devoted to experimental investigation of non-equilibrium plasma effect upon permeability and selectivity of the polymer membrane “Letosil”. Two types of the discharge s were used for membrane modification: nanosecond and streamer two barriers discharges in two gas mixtures Ar-O <sub>2</sub> и CO <sub>2</sub>. Measurement of membrane permeability in respect of He и CH <sub>4</sub> indicated that plasma treatment provides significant drop of CH <sub>4</sub> permeability and do not effect upon He permeability. Thus, plasma effect leads to strong increasing (about by 2 order of magnitude) of selectivity in He-CH <sub>4</sub> mixture.