CO₂‐philic polyether‐block‐amide/glycerol triacetate blend membranes: gas‐permeation performance, thermal stability, and storage stability

Abstract

Polyether-block-amide (Pebax)/glycerol triacetate (GTA) blend membranes with various compositions were prepared with a solution-casting method. The gas-separation performance, thermal stability, and storage stability of the prepared membranes were investigated at different pressures and temperatures. The Arrhenius equation was used to describe the gas-permeation performance of the Pebax1074/GTA membranes with a low GTA concentration (≤40 wt %) rather than those membranes with a high GTA concentration (>40 wt %). A higher GTA content, lower treatment temperature, and storage temperature increased the gas permeability and induced a stronger hydrostatic pressure effect. The low-storage temperature was beneficial for fixing GTA on the blend membrane.

Recent advances in polymer membranes employing non-toxic solvents and materials

“…Furthermore, GTA can be used to prepare PVDF membranes 123,124 and polyether-block-amide (Pebax1074) membranes. 125,126 For example, Qin et al 123 used GTA as a solvent to fabricate PVDF/SiO 2 composite membranes with high anti-fouling performance via TIPS.…”

Advances in high carbon dioxide separation performance of poly (ethylene oxide)-based membranes

“…Feng et al [86] used from Pebax and glycerol triacetate (GTA) for fabrication of blend membranes. In low concentration of GTA, the effect of plasticization increase gas diffusivity and permeability has major role in CO 2 separation.…”