Development of a new functional cation-exchange membrane and its application to facilitated transport of CO2
Development of a new functional cation-exchange membrane and its application to facilitated transport of CO2
- Journal of Membrane Science, 93(3), p.237-244, 1994 .
A new type of cation-exchange membrane was prepared by grafting acrylic acid onto a microporous polyethylene membrane by use of plasma-grafted polymerization technique. The facilitated transport of CO2 through the plasmagrafted membrane containing ethylenediamine was studied. The obtained membrane showed remarkably high CO2 permeability and selectivity of CO2 over N2. When the CO2 partial pressure in the feed gas was 0.047 atm, the CO2 permeability and the selectivity obtained were 1.0X 10Y4 cm3 cm-' s- ' cmHg-' and 4700, respectively. These effkiencies were much higher than those of conventional polymer membranes, and were also superior to efficiencies of ion-exchange membranes containing a carrier, reported so far. These excellent results are probably attributable to the high ion-exchange capacity and the high water content. The newly prepared membrane was stable
FACILITATED TRANSPORT
ION-EXCHANGE MEMBRANES
ACRYLIC ACID
CARBON DIOXIDE
PLASMA-GRAFT POLYMERIZATION
A new type of cation-exchange membrane was prepared by grafting acrylic acid onto a microporous polyethylene membrane by use of plasma-grafted polymerization technique. The facilitated transport of CO2 through the plasmagrafted membrane containing ethylenediamine was studied. The obtained membrane showed remarkably high CO2 permeability and selectivity of CO2 over N2. When the CO2 partial pressure in the feed gas was 0.047 atm, the CO2 permeability and the selectivity obtained were 1.0X 10Y4 cm3 cm-' s- ' cmHg-' and 4700, respectively. These effkiencies were much higher than those of conventional polymer membranes, and were also superior to efficiencies of ion-exchange membranes containing a carrier, reported so far. These excellent results are probably attributable to the high ion-exchange capacity and the high water content. The newly prepared membrane was stable
FACILITATED TRANSPORT
ION-EXCHANGE MEMBRANES
ACRYLIC ACID
CARBON DIOXIDE
PLASMA-GRAFT POLYMERIZATION