Polymeric Gas Separation Membrances

Abstract

Synthetic gas separation membranes have developed tremendously since the first commercial system was introduced just 15 years ago. Factors affecting the permeabilities and selectivities of new “tailor‐made” membrane materials are discussed. For example, because the p‐isomer is more rod‐like than the m‐isomer chain shown in the figure, the resulting membranes have a higher permeability.

Polyhedral oligomeric silsesquioxane/polyamide bio-nanocomposite membranes: structure-gas transport properties

“…2 Adsorption, the first step, needs more available adsorption sites on the membrane surface, which largely depends on the roughness of the surface of the membrane. 14 For example, roughness provides more available adsorption sites than completely smooth surface of membrane.…”

Gas Separation with Polymer Membranes

“…Plots of the selectivity a for the gas pairs a) H 2 /N 2 , b) CO 2 /N 2 , and c) O 2 /N 2 versus the O 2 , H 2 , and CO 2 permeability coefficients of poly(ether ketone)s 1. The graphs show the empirical limits as well as some data points from the literature (~): triazole (poly(1-phenyl-1,3,4-triazole-2,5-diyl-1,4-phenylen)), [8] 6FDA-TADPO (see Scheme 1), [3] a-PMMA (atactic poly(methyl methacrylate)), [20] s-PMMA (syndiotactic poly(methyl methacrylate)), [20] 6FDA-MDA, [7] and ethyl cellulose. [19] than usual.…”

Influence of temperature upon properties of tailor-made PEBAX® MH 1657 nanocomposite membranes for post-combustion CO2 capture

“…permeating gas molecules) are adsorbed at the feed side of the membrane, then diffuse across membrane and finally desorb from the permeate side of the membrane. Permeability of a gas is a characteristic parameter for the membrane material, which depends on the solubility and the diffusion coefficient of the penetrant in the polymeric membranes [11,12]. Properties of both the penetrant and the polymer determine the transport of gases through the membrane.…”