POLYMERS, POLYMER MEMBRANES AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2015 - IPC B01D71/64 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to production of a polymer material, such as polymer membranes, gas-separation membranes, as well as to separation of components of a fluid medium. The method includes preparing a polymer matrix containing at least one polymer and at least one blowing agent. Polymer material is formed by decomposing at least one blowing agent at temperature lower than or equal to Tg, where Tg is the glass-transition temperature of the polymer matrix. The decomposition step includes subjecting the polymer matrix to thermal decomposition, chemical decomposition, electrical decomposition and radiation decomposition. Permeability of the polymer material is at least 1.2 times greater than the permeability of the polymer matrix for gas, and selectivity of the polymer material for said pair of gases is at least 0.35 times the selectivity of the polymer matrix. Novel polymer materials, gas-separation polymer membranes and methods of separating fluid components are also described.

EFFECT: method provides gas-separation membranes which exceed the upper limit of the Robson ratio for at least one pair of separated gases.

26 cl, 8 dwg, 4 tbl, 13 ex