News
Honours
Dr. DIGUET Antoine
Invited Professors
TURI Laszlo
Department of Physical Chemistry - Eötvös Lorànd University - Budapest - Hungary
POLIMENO Antonino
Gruppo di Chimica Teorica-Dipartimento di Scienze Chimiche-Universita' degli Studi di Padova-Italia
MUIR Tom
Princeton University - Princeton NJ - USA
Last publication
Bousquet, David, Coudert François-Xavier, Fossati Alexandre G. J., Neimark Alexander V., Fuchs Alain H., and Boutin Anne
The Journal of Chemical Physics,
Volume 138,
p. 174706,
2013
Next defence
HDR
Mme GUILLE COLLIGNON Manon
Thursday 6 June 2013 10:00
E012 (ENS, département de Chimie)
Home Publications Miniemulsion polymerization templates: A systematic comparison between low energy emulsification (Near-PIT) and ultrasound emulsification methods
Miniemulsion polymerization templates: A systematic comparison between low energy emulsification (Near-PIT) and ultrasound emulsification methods
| Title | Miniemulsion polymerization templates: A systematic comparison between low energy emulsification (Near-PIT) and ultrasound emulsification methods |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | Galindo-Alvarez, J, Boyd D, Marchal P, Tribet C, Perrin P, Marie-Begue E, Durand A, Sadtler V |
| Journal | Colloids and Surfaces a-Physicochemical and Engineering Aspects |
| Volume | 374 |
| Pagination | 134-141 |
| Abstract | Poly(ethylene oxide)-covered polystyrene nanoparticles were prepared by free radical miniemulsion polymerization after using an original low energy emulsification procedure called Near-PIT method. This procedure consisted in heating the initial monomer emulsion up to a temperature close to the phase inversion temperature (PIT) but lower. The surfactants used were commercial Brij (R) 78 and Brij (R) 700 and mixtures of both. The Near-PIT method was showed to allow the preparation of nanoparticle suspensions with average diameters lower than 100 nm and solid contents higher than 20 wt% while avoiding heating the initial monomer emulsion above PIT like in usual low energy methods. The influences of various formulation and operating parameters were investigated. Finally, the Near-PIT method was compared to other well-known procedures for nanoparticle preparation, miniemulsion polymerization after ultrasound emulsification and macroemulsion polymerization under mechanical agitation. The performances of Near-PIT procedure were comparable to ultrasound emulsification. (C) 2010 Elsevier B.V. All rights reserved. |