Development of an ion gel-based CO₂ separation membrane composed of Pebax 1657 and a CO₂-philic ionic liquid.

ABSTRACT: A tough ion gel membrane containing a CO₂-philic ionic liquid, 1-ethyl-3-methylimidazolium tricyanomethanide ([Emim][C(CN)₃]), was developed, and its CO₂ permeation properties were evaluated under humid conditions at elevated temperatures. Pebax 1657, which is a diblock copolymer composed of a polyamide block and a polyethylene oxide block, was used as the gel network of the ion gel membrane to prepare a tough ion gel with good ionic liquid-holding properties. The polyamide block formed a semicrystalline structure in [Emim][C(CN)₃] to toughen the ion gel membrane via an energy dissipation mechanism. The polyethylene oxide block exhibited good compatibility with [Emim][C(CN)₃] and contributed to the retention of the ionic liquid

SUBMITTER: Muroga J 

PROVIDER: S-EPMC11215809 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature