SUBSTANCE INTERACTIONS AND THEIR INFLUENCES IN FIXED CARRIER MEMBRANE PROCESS FOR CO_2 SEPARATION
Polyvinylpyrrolidone was synthesized by radical polymerization Poly( N vinyl γ sodium aminobutyrate) containing secondary amine and carboxyl groups which can react reversibly with CO 2 was obtained through the hydrolysis of polyvinylpyrrolidone A new facilitated transport composite membrane for CO 2 separation was prepared with the hydrolysate as the top layer material and microporous membrane as the support The interactions of CO 2, CH 4, water, low molecular mass impurities in the membrane and support membranes were studied and the influences of the interactions on the membrane structure and performance were also investigated Water was not only a carrier but also a plasticizer.The coupling between CO 2 and CH 4 affected their permeability.The presence of low molecular mass impurities in the membrane could alter the membrane structure and performance.The material and pore diameter of the support membrane affected the composite membrane performance