Synthesis of sub-micronic and nanometric PMMA particles via emulsion polymerization assisted by ultrasound: Process flow sheet and characterization
| Autor: | J.-Y. Hihn, G. Gosse, L. Baissac, C.C. Buron, P. Berçot, L. Chantegrel, Loïc Hallez |
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| Přispěvatelé: | Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut de Recherche en Immunologie et en Cancérologie [UdeM-Montréal] (IRIC), Université de Montréal (UdeM) |
| Rok vydání: | 2018 |
| Předmět: |
Range (particle radiation)
Materials science Acoustics and Ultrasonics Sonication Organic Chemistry Analytical chemistry Emulsion polymerization 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry Dynamic light scattering Polymerization [CHIM]Chemical Sciences Chemical Engineering (miscellaneous) Environmental Chemistry Particle Radiology Nuclear Medicine and imaging Particle size Fourier transform infrared spectroscopy 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Ultrasonics Sonochemistry Ultrasonics Sonochemistry, Elsevier, 2018, 40, pp.183-192. ⟨10.1016/j.ultsonch.2017.03.027⟩ |
| ISSN: | 1350-4177 |
| DOI: | 10.1016/j.ultsonch.2017.03.027 |
| Popis: | PMMA particle synthesis was performed from MMA (methyl methacrylate) and water mixtures, exposed to different ultrasonic systems and frequencies. The sonication sequence was 20kHz→580kHz→858kHz→1138kHz, and the solution was sampled after each irradiation step for polymerization. Effects of sonication parameters (time, power), polymerization method (thermo-initiated or photo-initiated), use of small amounts of surfactant (Triton X-100™ or Tween® 20) and initial MMA quantity were investigated on particle size and synthesis yields. Particle size and size distribution were measured by DLS (Dynamic Light Scattering), and confirmed via SEM (Scanning Electron Microscopy) images. Synthesis yield was calculated using the dry weight method. Particle composition was estimated using FTIR (Fourier Transform Infra-Red) spectroscopy. PMMA (polymethylmethacrylate) monodispersed particles were successfully synthesized, with a possibility of control in the 78-310nm size range. These sized-controlled particles were synthesized with a 7.5-85% synthesis yield (corresponding to 7.5-40g/L particle solid content), depending on operational parameters. Furthermore, a trade-off between particle size and synthesis yield can be proposed: 20kHz→10min waiting time→580kHz→858kHz leading to 90nm particles diameter with 72% yield in less than 40min for the whole sequence. Thus, the synthesis under ultrasound can be found easy to implement and time efficient, ensuring the success of the scale-up approach and opening up industrial applications for this type of polymeric particles. |
| Databáze: | OpenAIRE |
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