Inorganic Reinforced Poly(ionic liquid) Microcapsules: Confined Cooling‐Assisted Phase Separation Self‐Assembly and Enhanced Electroresponsive Properties. Issue 5 (17th January 2022)

• Record Type: Journal Article
• Authors: Lei, Qi; He, Fang; Zhao, Xiaopeng; Yin, Jianbo
• Is Part Of: Macromolecular rapid communications. Volume 43:Issue 5(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-01-17
• Subjects: microcapsules -- physical preparation -- poly(ionic liquid)s -- self‐assembly; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202100769
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: A simple preparation of inorganic reinforced poly(ionic liquid) (PIL) microcapsules by combining dispersion polymerization and confined cooling‐assisted phase separation self‐assembly is reported. Silane coupling agent‐modified PIL microbeads are first prepared by dispersion polymerization. Then, the microbeads are dissolved in a theta solvent composed of good solvent and non‐solvent to form hollow SiOx microcapsules at a relatively high temperature. Finally, the solution is cooled to induce the nucleation and growth of dissolved PIL chains on the inner and outer surface of hollow SiOx microcapsules to form inorganic reinforced microcapsules with asymmetric PIL/SiOx /PIL sandwich‐like shell. The morphology of microcapsules can be controlled by adjusting PIL concentration and cooling rate. The inorganic reinforced microcapsules show enhanced suspended stability and electroresponsive characteristic when used as the dispersed phase of smart suspensions. Abstract : A facile method is developed to prepare inorganic reinforced poly(ionic liquid) (PIL) microcapsules by combining dispersion polymerization and cooling‐assisted phase separation. The morphology of microcapsules can be controlled by adjusting PIL concentration and cooling rate. The microcapsules show enhanced suspended stability and electroresponsive characteristic to recycling electric stimuli when used as the dispersed phase of smart suspensions.