title: Poly(ethylene oxide)-b-poly(L-lactide) diblock copolymer/carbon nanotube-based nanocomposites: LiCl as supramolecular structure-directing agent.
abstract: This work relies on the CNT dispersion in either solution or a polymer matrix through the formation of a three-component supramolecular system composed of PEO-b-PLLA diblock copolymer, carbon nanotubes (CNTs), and lithium chloride. According to a one-pot procedure in solution, the "self-assembly" concept has demonstrated its efficiency using suspension tests of CNTs. Characterizations of the supramolecular system by photon correlation spectroscopy, Raman spectroscopy, and molecular dynamics simulations highlight the charge transfer interaction from the CNTs toward the PEO-b-PLLA/LiCl complex. Finally, this concept was successfully extended in bulk (absence of solvent) via melt-processing techniques by dispersing these complexes in a commercial polylactide (PLA) matrix. Electrical conductivity measurements and transmission electron microscopy attested for the remarkable dispersion of CNTs, confirming the design of high-performance PLA-based materials.
authors.affiliation: Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers, University of Mons, Place du Parc 20, 7000 Mons, Belgium. Franck.Meyer@umons.ac.be
authors.forename: Franck
authors.initials: F
authors.lastname: Meyer
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Raquez
authors.forename: Pierre
authors.initials: P
authors.lastname: Verge
authors.forename: Inger
authors.initials: I
authors.lastname: Martínez de Arenaza
authors.forename: Borja
authors.initials: B
authors.lastname: Coto
authors.forename: Pascal
authors.initials: P
authors.lastname: Van Der Voort
authors.forename: Emilio
authors.initials: E
authors.lastname: Meaurio
authors.forename: Bart
authors.initials: B
authors.lastname: Dervaux
authors.forename: Jose-Ramon
authors.initials: JR
authors.lastname: Sarasua
authors.forename: Filip
authors.initials: F
authors.lastname: Du Prez
authors.forename: Philippe
authors.initials: P
authors.lastname: Dubois
mesh_terms: D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000737:chemistry; D004553:Electric Conductivity; D018021:Lithium Chloride / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D056004:Molecular Dynamics Simulation; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D011091:Polyesters / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013816:Thermodynamics
chemical_list: D001672:Biocompatible Materials; D037742:Nanotubes, Carbon; D011091:Polyesters; D011092:Polyethylene Glycols; C033616:poly(lactide); D018021:Lithium Chloride