Poly(ether-block-amide) copolymer membrane for CO₂/N₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance.

ABSTRACT: The present work is focused on the study of the effect that the casting solution concentration has on the morphology and gas separation performance of poly(ether-block-amide) copolymer membranes (Pebax^® MH 1657). With this aim, three different concentrations of Pebax^® MH 1657 in the casting solution (1, 3 and 5 wt%) were used to prepare dense membranes with a thickness of 40 µm. The morphology and thermal stability of all membranes were characterized by scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, rotational viscometry and thermogravimetric analyses. An increase in crystallinity was notable when the amount of solvent in the Pebax^® MH 1657 solution was higher, mainly related to the polymer chains arrangement and

SUBMITTER: Martinez-Izquierdo L 

PROVIDER: S-EPMC6774959 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature