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  • Title: Preparation of Poly(Ionic Liquid) Particles with Anionic Side Chain by Dispersion Polymerization.
    Author: Nakano T, Yamane M, Kurozuka A, Suzuki T, Minami H.
    Journal: Macromol Rapid Commun; 2020 Jul; 41(14):e2000271. PubMed ID: 32548946.
    Abstract:
    Micrometer-sized poly(ionic liquid) (PIL) particles with an anionic side chain, poly(1-butyl-3-methylimidazolium 3-sulfopropyl methacrylate) (poly([Bmim][SPMT])), are successfully prepared by dispersion polymerization at 60 °C in ethanol/ethyl acetate (2/8, w/w) with poly(vinylpyrrolidone) as a stabilizer. However, the obtained particles do not maintain the particulate state during drying at room temperature due to poly([Bmim][SPMT])'s low glass-transition temperature, below room temperature. In order to prevent coalescence and maintain particle shape, a cross-linking monomer is added after the nucleation stage of dispersion polymerization. Moreover, Fourier-transform infrared spectroscopy (FT-IR) demonstrates cation exchange between the obtained particles and metal cations (Ag+ ).
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