Tailoring the Morphology of Polymer/Montmorillonite Hybrid Latexes by Surfactant-Free Emulsion Polymerization Mediated by Amphipathic MacroRAFT Agents
| Autor: | Franck D'Agosto, Amilton M. Santos, Igor Stefanichen Monteiro, Pierre-Yves Dugas, Muriel Lansalot, Elodie Bourgeat-Lami, Thaissa de Camargo Chaparro, Rodrigo Duarte Silva |
|---|---|
| Přispěvatelé: | Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 (C2P2), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), LCPP, Université de Lyon-Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), First Transnational Call in Polymer Chemistry (IUPAC) and São Paulo Research Foundation (FAPESP) (Brazil) (grants #2010/50383-5, #2010/ 19919-6 and #2011/20533-8) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Morphology (linguistics) Polymers and Plastics Surfactant free Organic Chemistry Emulsion polymerization Chain transfer 02 engineering and technology Raft Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Montmorillonite chemistry Chemical engineering POLÍMEROS (QUÍMICA ORGÂNICA) mental disorders Amphiphile Materials Chemistry [CHIM]Chemical Sciences 0210 nano-technology |
| Zdroj: | Macromolecules Macromolecules, American Chemical Society, 2019, 52 (13), pp.4979-4988. ⟨10.1021/acs.macromol.9b00741⟩ Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0024-9297 1520-5835 |
| DOI: | 10.1021/acs.macromol.9b00741⟩ |
| Popis: | International audience; In this work, we report the reversible addition−fragmentation chain transfer (RAFT)-mediated synthesis of polymer/montmorillonite (MMT) hybrid latexes by surfactant-free emulsion polymerization. Macromolecular RAFT (macro-RAFT) agents combining repeating units of acrylic acid (AA), n-butyl acrylate (BA), poly(ethylene glycol) methyl ether acrylate (PEGA), or 2-(dimethylamino)ethyl methacrylate (DMAEMA) were adsorbed on exfoliated sodium MMT platelets and the resulting aqueous colloidal dispersions were used as the reaction medium for emulsion copolymerization of methyl methacrylate and BA under starved-feed conditions. The AA-and PEGA-containing macroRAFT agents led to the formation of polymer-decorated-clay platelets, indicating some affinity of the growing polymer chains for the clay surface, albeit not sufficient for the complete encapsulation of the clay sheets inside the polymer particles. When DMAEMA-based macroRAFT agents were used, transmission electron microscopy analyses of the hybrid latexes revealed the formation of a polymer layer on the MMT platelets indicating that the polymerization took place on the inorganic surface resulting in full encapsulation while preserving the shape anisotropy of the original clay mineral. |
| Databáze: | OpenAIRE |
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