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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Mecerreyes, David Isik, Mehmet Fernandes, Ana M. Paulis, Maria Vijayakrishna, Kari |
| Copyright Year | 2016 |
| Abstract | New methods for preparing polymeric nanoparticles are actively being investigated such as self-assembly of amphiphilic block copolymers, self-crosslinking of single-chain macromolecules, nanoprecipitation or emulsion–miniemulsion polymerizations. However, most methods require multi-step synthesis, controlled polymerization mechanisms and tedious purification processes. In this work, amphiphilic poly(ionic liquid) random copolymers that self-assemble into polymeric nanoparticles were prepared in water through a simple partial anion exchange process. This method was demonstrated for different cationic polyelectrolytes such as poly(1-vinyl-3-ethyl imidazolium bromide), poly(diallyldimethylammonium chloride) and poly(allylamine hydrochloride). Their partial anion exchange was conducted by the addition of lithium bis(trifluoromethanesulphonyl)imide to the aqueous solution of the polymer. It was found out that the amphiphilic poly(ionic liquid)s containing small amounts (1–10%) of bis(trifluoromethanesulfonimide) anion self-assemble into spherical nanoparticles as revealed by dynamic light scattering and transmission electron microscopy. The nanoparticle size ranged from 100 nm to 600 nm depending on the extent of partial anion exchange and the nature of the polyelectrolyte. As an application, the poly(ionic liquid) nanoparticles were used as flocculants for water purification. The use of amphiphilic poly(ionic liquid)s as flocculants enhanced the evolution rate of the sediment considerably in comparison with the parent polyelectrolytes. |
| Starting Page | 1668 |
| Ending Page | 1674 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 17599954 |
| Volume Number | 7 |
| Issue Number | 8 |
| Journal | Polymer Chemistry |
| DOI | 10.1039/c5py02001h |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Nanoparticle Polymerization Ion Lithium Polymer Allylamine Sedimentation Ionic liquid Bromide Polyelectrolyte Imide Self-assembly Chloride Transmission electron microscopy Dynamic light scattering Flocculation Partial seizure Amphiphile |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics |
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