Atom transfer radical polymerization ATRP initiated by aryl diazonium salts: a new route for surface modification of multiwalled carbon nanotubes by tethered polymer chainsReportar como inadecuado




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1 Bioemco - Biogéochimie et écologie des milieux continentaux 2 ITODYS UMR7086 - Interfaces, Traitements, Organisation et Dynamique des Systèmes

Abstract : We report for the first time on grafting of polyn-methyl methacrylate, PMMA, and polystyrene PS brushes by ATRP from the surface of aligned multiwalled carbon nanotubes MWCNT which were electrochemically treated with brominated aryl groups based on diazonium salts. The polymer brushes formed amorphous coatings, as evidenced by high-resolution transmission electron microscopy, by comparison to the nanotube structure. X-ray photoelectron spectroscopy XPS analysis confirmed the presence of PS and PMMA by their characteristic C1s and valence band features. Well-aligned MWCNT network allowed us to sheath individual MWCNTs with polymer brushes while keeping the initial MWCNT alignment structure. This method opens up new avenues for the elaboration of polymer-NT hybrids.

keyword : Carbon nanotubes Diazonium salts Atom transfer radical polymerization ATRP





Autor: Tarik Matrab Jérôme Chancolon Martine Mayne L-Hermite Jean-Noël Rouzaud Guy Deniau Jean-Paul Boudou - Mohamed M. Chehimi - Mic

Fuente: https://hal.archives-ouvertes.fr/



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