Dispersion polymerization of an azo-monomer and methylmethacrylate in the presence of oxazoline macromonomer

V. Victor Jerca; F. Adriana Nicolescu; D. Sorin Vasilescu; D. Mircea Vuluga

doi:10.1117/12.869887

12 October 2010 Dispersion polymerization of an azo-monomer and methylmethacrylate in the presence of oxazoline macromonomer

V. Victor Jerca, F. Adriana Nicolescu, D. Sorin Vasilescu, D. Mircea Vuluga

Author Affiliations +

Proceedings Volume 7838, Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defence Systems Technology VII; 78381H (2010) https://doi.org/10.1117/12.869887
Event: SPIE Security + Defence, 2010, Toulouse, France

Abstract

Colored micron-sized methyl methacrylate particles have been obtained by dispersion polymerization of methyl methacrylate and an azo-monomer in the presence of vinyl silane oxazoline macromonomer used as stabilizer. The polymerizable dye has a methacryloyl group for copolymerization and suitable azobenzene moiety to improve the solubility in the solvent. The particles showed a spherical morphology and large size distribution, features which were appreciated by scanning electron microscopy. The azo-dye could be covalently incorporated up to 4 wt% in the particles. The thermal properties of the particles were investigated by simultaneous DSC-TGA analysis. The particles showed clear Tgs at 128 °C and thermal stability up to 292 °C. The copolymer's chemical structures were confirmed by 1H-NMR and FT-IR spectroscopy and their average molecular weights were evaluated by SEC.

Citation Download Citation

V. Victor Jerca, F. Adriana Nicolescu, D. Sorin Vasilescu, and D. Mircea Vuluga "Dispersion polymerization of an azo-monomer and methylmethacrylate in the presence of oxazoline macromonomer", Proc. SPIE 7838, Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defence Systems Technology VII, 78381H (12 October 2010); https://doi.org/10.1117/12.869887

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