Preparation of functional polymer particles using ionic liquids

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We have succeeded in preparing functional polymer and composite particles utilizing ionic liquids: 1) Polystyrene (PS)/Mg(OH)2 composite particles were successfully prepared by seeded dispersion sol-gel process in an ionic liquid in the presence of PS seed particles. The composite particles had smooth surfaces and core-shell morphology consisting of PS core and Mg(OH)2 shell having high crystallinity. 2) Micron-sized monodisperse poly(ionic liquid) (PIL) (and composite) particles were prepared by dispersion/emulsion polymerization. Moreover, it confirmed that the obtained particles maintained the properties of the ionic liquid. In addition, cellulose particles were successfully prepared by solvent releasing method, whereby cellulose-ionic liquid droplets dispersed in hexadecane were mixed with 1-butanol. This method is a simple approach for the preparation of cellulose particles having various structures using ionic liquid.