A polymerizable room temperature ionic liquid (RTIL), 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) - triethylamine (TEA), was synthesized by neutralization of AMPS with TEA in acetone followed by evaporation of the solvent under a reduced pressure at room temperature. The RTIL was characterized with fourier transform infrared spectroscopy, differential scanning calorimetry (DSC), and 1H NMR. Co-polymeric gels of the RTIL with acrylamide (AAm) were prepared by aqueous solution polymerization using N,N′-methylenebisacrylamide as a crosslinker, and ammonium persulfate as an initiator. Superabsorbency of the gels in aqueous and a series of organic liquids was investigated gravimetrically. DSC data showed that the glass transition temperature of AMPS - TEA was 59.4 °C. Poly (AMPS - TEA-co-AAm) gels exhibited superabsorbency in both water and a series of organic solvents. The mechanism for swelling in aqueous and organic media of the gels was critically discussed.
- 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS)
- triethylamine (TEA)
- room temperature ionic liquid (RTIL)
Weng, T., Jianwei, G., Xinming, L., Yingde, C., Xuejiao, Y., Zhang, K., Zhang, B., Yin, G., Mikhalovsky, S., Mikhalovska, L., Savina, I., Howell, C., & Sandeman, S. (2014). Synthesis of the polymerizable room temperature ionic liquid AMPS – TEA and superabsorbency for organic liquids of its copolymeric gels with acrylamide. Designed Monomers and Polymers, 17(2), 140-146. https://doi.org/10.1080/15685551.2013.840480