Highly cross-linked polyether-based 1,2,3-triazolium ion conducting membranes with enhanced gas separation properties

作者：Zhou Xu^*; Obadia Mona M; Venna Surendar R; Roth Elliot A; Serghei Anatoli; Luebke David R; Myers Christina; Chang Zhengmian; Enick Robert; Drockenmuller Eric^*; Nulwala Hunaid B^*

来源：European Polymer Journal, 2016, 84: 65-76.

DOI：10.1016/j.eurpolymj.2016.09.001

• Poly(ionic liquid)
• 1,2,3-Triazolium
• Network
• Ionic conductivity
• Polyether
• CO2 separation membrane

A series of cross-linked polyether-based 1,2,3-triazolium ion conducting membranes are prepared via the combination of thermally promoted Huisgen 1,3-dipolar cycloaddition of a dialkyne and a diazide poly(trimethylene ether glycol) monomers with in-situ N-alkylation of the resulting poly(1,2,3-triazole)s with varying contents of 1,10-diiododecane as cross-linking agent. The resulting free-standing membranes have T(g)s below -60 degrees C, T(d)s up to 230 degrees C, and Young's modulus up to 4.2 MPa. The overall combined reaction kinetics were studied by DSC yielding an activation energy of 76 kJ/mol by the Kissinger method. These ion conducting membranes have conductivities up to 10(-6) S/cm at 30 degrees C under anhydrous conditions. They have potential to be used in CO2 separation applications as they exhibit CO2 permeability of 59-110 Barrer and CO2/N-2 selectivity of 25-48.

• 出版日期2016-11