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Glassy-Crystalline Nanostructured Polymers Via Reactive Blending

Authors :: Pierre Gerard
Mathilde Freluche
Ilias Iliopoulos
Ludwik Leibler
Jean-Jacques Flat
Laboratoire Matière Molle et Chimie (MMC)
Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Centre de recherche, développement, applications et technique de l'ouest (CERDATO)
Arkema (Arkema)
Source :: Macromolecular Symposia, Macromolecular Symposia, Wiley-VCH Verlag, 2006, 245-246, pp.371-374, Macro 2006 World Polymer Congress Polymer Blends and Composites, Macro 2006 World Polymer Congress Polymer Blends and Composites, 2006, Rio de Janeiro, Brazil
Publication Year :: 2006
Publisher :: Wiley, 2006.
Abstract: Nanostructured glassy-crystalline blends were obtained by reactive blending of poly(methyl methacrylate) (PMMA), or of poly(methyl methacrylate)-b-poly-(n-butyl acrylate)-b-poly(methyl methacrylate) (MBM) triblock copolymer, with polyamide-6 (PA). The PMMA chain, or block, contains a low fraction of glutaric anhydride units which are strongly reactive toward the terminal amino group of PA. Under the blending conditions the grafting reaction is very efficient leading to a high fraction of graft copolymer. When the PA is short, Mn = 2500, nanostructured blends are obtained with both PMMA and MBM while for longer PA, Mn = 15000, nanostructures form only with the triblock MBM copolymer. The intrinsic property of MBM to self-organize in lamellar-like morphology seems to favour the nanostructure formation in the final blend. The resulting materials exhibit unique properties such as transparency, creep resistance and solvent resistance.