Magnetic suspension balance study of carbon dioxide solubility in ammonium-based polymerized ionic liquids: Poly(p-vinylbenzyltrimethyl ammonium tetrafluoroborate) and poly([2-(methacryloyloxy)ethyl] trimethyl ammonium tetrafluoroborate)

The CO2 solubility in two ammonium-based polymerized ionic liquids, poly(p-vinylbenzyltrimethyl ammonium tetrafluoroborate), P[VBTMA][BF4], and poly([2-(methacryloyloxy)ethyl] trimethyl ammonium tetrafluoroborate), P[MATMA][BF4], up to 75 °C and 15 bar, is found to be higher than that in bisphenol-A polysulfone. The CO2 solubility in P[VBTMA][BF4] is found to be higher than that in P[MATMA][BF4] at the same temperature and pressure.