聚合物膜

Abstract(#br)An absolutely novel membrane of Poly (vinylchloride- co -vinylacetate) (PVCA) copolymer and polydimethylsiloxane (PDMS) with five different ratios were fabricated and used for further characterizations. Dense membranes of 50 μm were synthesized with ratios of PDMS and PVCA 99:1, 98:2, 97:3, 96:4 and 95:5 respectively. The separation performance is characterized by permeation studies of pure gases CO 2 , N 2 and CH 4 at two different temperatures i.e. 25 °C and 75 °C and pressure of 10 psi.

Abstract(#br)Transport parameters of gases and light hydrocarbons in polymeric membrane materials including their temperature and pressure dependencies are very important to know for estimation of perspective applications and optimal operating conditions of membranes and membrane modules in gas separation processes. Today, transport parameters of gases for more than 2000 polymers and copolymers have been accumulated systematically. Unfortunately, in most of cases only gas permeability coefficients under isothermal conditions have been measured.