High ionic liquid content polymeric gel membranes: Correlation of membrane structure with gas and vapour transport properties

▸ Polymeric gel membranes based on the ionic liquid [EMIM][TFSI] and p(VDF-HFP). ▸ Young's modulus versus permeability distinguishes D and S controlled transport. ▸ The ionic liquid strongly enhances the membrane permeability. ▸ The ionic liquid gives high selectivity of vapours versus permanent gases. ▸ Correlation with molecular properties enhances understanding of transport phenomena.