| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 613628 | Journal of Colloid and Interface Science | 2006 | 6 Pages |
Soap-free emulsion polymerization was extended to preparation of monodisperse poly(methyl methacrylate) (PMMA) particles incorporating rhodamine 6G (R6G) fluorescent molecules. The polymerization was conducted in the presence of an anionic monomer, p-styrenesulfonate (NaSS), which improved dispersion stability of the polymer particles. NaSS concentrations was ranged up to 2 mol/m3 H2O in the polymerization at 0.5 kmol/m3 H2O methyl methacrylate (MMA) monomer and 5 mol/m3 H2O potassium persulfate (KPS) initiator for R6G concentrations from 0.1 to 10 mol/m3-polymer. At R6G concentrations lower than 1.0 mol/m3-polymer, PMMA particles were highly monodisperse and incorporated most R6G molecules. The average sizes of PMMA particles were in a rage of 160–300 nm, and decreased with the concentration of NaSS. The high monodispersity of the particles enabled the fabrication of colloidal crystals of the particles with a vertical deposition method.
Graphical abstractHighly monodisperse polymer particles could be prepared in soap-free emulsion polymerization of MMA in the presence of rhodamine 6G. The high monodispersity of particles enabled the fabrication of colloidal crystals.Figure optionsDownload full-size imageDownload high-quality image (85 K)Download as PowerPoint slide
