Surface Assisted Nucleation and Growth of Polymer Latexes on Organically-Modified Inorganic Particles |
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| Authors: | Elodie Bourgeat-Lami Norma Negrete Herrera Jean-Luc Putaux Stéphane Reculusa Adeline Perro Serge Ravaine Christophe Mingotaud Etienne Duguet |
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| Institution: | 1. Laboratoire de Chimie et Procédés de Polymérisation, CNRS-CPE Lyon, Bâtiment 308 F, 43, boulevard du 11 novembre 1918, BP 2077-69616 Villeurbanne Cedex, France;2. Centre de Recherches sur les Macromolécules Végétales, ICMG/CNRS, BP 53, 38041 Grenoble Cedex 9, France;3. Centre de Recherche Paul Pascal, CNRS, 115, avenue du Dr Schweitzer, 33600 Pessac, France;4. Laboratoire des IMRCP—Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse Cedex, France;5. Institut de Chimie de la Matière Condensée de Bordeaux, CNRS-87, avenue du Dr Schweitzer, 33608 Pessac Cedex, France |
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| Abstract: | Summary: Polymer latex particles were synthesized in the presence of inorganic particles, which had been organically-modified to promote favorable interactions with growing macromolecules. The organic modification was performed using three different routes: (1) surface covalent grafting of vinyl trialkoxysilanes, (2) surface adsorption of polyethylene glycol-based macromonomers, and (3) bulk modification through ion exchange with cationic monomers or cationic initiators. Two types of mineral particles were studied: commercial and self-prepared silica particles (with diameters from 80 nm to 1 µm), and commercial laponite clay particles with a cation exchange capacity of 0.75 meq · g−1. Emulsion polymerization was performed in the presence of styrene or butyl acrylate monomers. The morphologies of the nanocomposite particles were observed by (cryogenic) transmission electron microscopy and correlated to the organic modification procedure. |
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| Keywords: | emulsion polymerization laponite nanocomposite colloids organic modification silicas |
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