NEW POLYMERIC MATERIALS FOR GAS-SEPARATION MEMBRANES

The transport properties of some polymers, which constitute a new class of potential materials for gas separation processes, are considered. Relationships between the structure and transport properties (coefficients of permeability, diffusion, and solubility) are discussed for highly selective polymers (including polyimides and polycarbonates) and highly permeable polymers (primarily, polymers with silicon-containing fragments in the main chain). A brief analysis of transport properties of some copolymers and polymer blends is presented. Prospects for the development of a new generation of the gas separation membranes are discussed.