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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Zhu, X. X. Bazin, Gwénaëlle |
| Copyright Year | 2012 |
| Abstract | Poly(styrene-co-N-isopropylacrylamide) core–shell microspheres have been synthesized by a two-step surfactant-free emulsion polymerization process. These microspheres are thermo-responsive with a clear volume phase transition around 30 °C and form crystalline colloidal arrays over a wide range of concentrations. The resulting crystalline arrays also display a response to temperature, visible through a change in the diffraction spectrum. However, the response appears to be highly dependent on the microsphere concentration. This behavior originates from a change in the short-range interactions between particles rather than from the volume change of the particles caused by the volume phase transition. Attractive van der Waals interactions increase while repulsions decrease; these changes only affect the equilibrium of concentrated samples, where the interparticle distance is sufficiently short to have an effect. |
| Starting Page | 1909 |
| Ending Page | 1915 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 1744683X |
| Volume Number | 8 |
| Issue Number | 6 |
| Journal | Soft Matter |
| DOI | 10.1039/c1sm06344h |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Diffraction Emulsion polymerization Microparticle Van der Waals force Phase transition |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Condensed Matter Physics |
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