Morphological change of thermosensitive imidazolium-based poly(ionic liquid)/poly(phenylethylmethacrylate) composite particles
| Autor: | Hideto Minami, Toyoko Suzuki, Masayoshi Tokuda |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Methacrylate 01 natural sciences Lower critical solution temperature 0104 chemical sciences chemistry.chemical_compound Monomer chemistry Chemical engineering Polymerization Ionic liquid Suspension polymerization Polymer blend 0210 nano-technology |
| Zdroj: | Polymers for Advanced Technologies. 28:470-475 |
| ISSN: | 1042-7147 |
| Popis: | Composite particles comprising poly(2-phenylethyl methacrylate) (PPhEMA) and imidazolium-based poly(ionic liquid)s were prepared by suspension polymerization of 1-vinyl-3-ethylimidazolium bis(trifluoromethanesulfonyl)amide as an ionic liquid monomer with dissolved PPhEMA. Not only PPhEMA exhibits lower critical solution temperature (LCST) behavior in 1-vinyl-3-ethylimidazolium bis(trifluoromethanesulfonyl)amide but also the polymer blend in the bulk state exhibited LCST behavior. However, the composite polymer particles obtained after polymerization at 70°C maintained a homogeneous inner structure after heat treatment as the polymerization temperature was greater than the LCST in this system due to the formation of a cross-linked structure during polymerization. When the composite particles were prepared by suspension polymerization at 30°C, their inner morphology changed from homogeneous to phase separated during the subsequent heat treatment. Moreover, the morphology transformation of the composite particles was dependent on the PPhEMA molecular weight. Copyright © 2016 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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