Morphology of polymer/clay latex particles synthesized by miniemulsion polymerization: Modeling and experimental results

M. Mičušík , A. Bonnefond , Y. Reyes , A. Bogner (1) , Laurent Chazeau (1) , C. Plummer , M. Paulis , J.R. Leiza

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

BA/MMA (90:10 wt.-%) were copolymerized in the presence of two different organomodified clays (C30B and CMA16) and 1.6-2.6wbm.-% surfactants. The effect of the compatibility of the organoclay in the monomer mixture on the morphology of hybrid polymer/clay particles was determined using TEM. The resulting morphologies were compared with the prediction of a Monte-Carlo simulation that determined the equilibrium morphology of monomer/clay hybrid miniemulsion droplets. The model predicted encapsulated morphologies only when the organoclay presented low clay/monomer and high clay/water interfacial tensions. C30B and CMA16 did not fulfill these conditions and provided a preferential surface location of the platelets on the polymer/water interphase as predicted by the model. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Mots clés: Equilibrium morphology; Interfacial tensions; Latex particles; Mini-emulsion polymerization; Miniemulsion droplets; Miniemulsions; Monomer mixtures; Monte Carlo Simulation; Montmorillonites; Organomodified clay; Surface location; TEM; Clay minerals; Emulsions; Organoclay; Polymers; Silicate minerals; Surface active agents; Morphology

Domaines: Matériaux

M. Mičušík, A. Bonnefond, Y. Reyes, A. Bogner, Laurent Chazeau, et al.. Morphology of polymer/clay latex particles synthesized by miniemulsion polymerization: Modeling and experimental results. Macromolecular Reaction Engineering, 2010, 4 (6-7), pp.432-444. ⟨10.1002/mren.200900084⟩. ⟨hal-01813936⟩