CO2 Responsive Imidazolium‐Type Poly(Ionic Liquid) Gels. Issue 14 (29th March 2016) - Zhang, Jing
Abstract : Poly(ionic liquid) (PIL) gels with CO2 stimulus responsiveness have been synthesized through the copolymerization of an imidazolium‐type ionic liquid monomer with 2‐(dimethyl amino) ethyl methacrylate. Upon bubbling with CO2 gas, the prepared PIL solution is converted to a transparent and stable gel, which can be turned back to the initial solution state after N2 bubbling. The reversible sol–gel phase transition behavior is proved by the reversible values of viscosity and ionic conductivity. The possible mechanism for such a reversible sol–gel phase transition is demonstrated by NMR, conductivity, and rheological measurements. Abstract : Poly(ionic liquid) (PIL) gels with CO2 stimuli responsiveness are synthesized through the copolymerization of an imidazolium‐type ionic liquid monomer with 2‐(dimethyl amino) ethyl methacrylate. Upon bubbling with CO2 gas, the prepared PIL solution is converted to a transparent and stable gel, which can be turned back to the initial solution state after N2 bubbling.