title: Direct fluorination applied to wood flour used as a reinforcement for polymers.
abstract: Direct fluorination was applied to wood flour in order to improve its compatibility with polymers and thus enhance the properties of wood-polymer composites. Fourier-transform infrared spectra and (19)F solid-state nuclear magnetic resonance results underlined a successful covalent grafting of fluorine atoms onto the wood chemical structure. No physical damage of the wood particles was observed during scanning electron microscopy analysis. The thermal behaviour of the wood flour was also studied by thermogravimetric analysis. The hydrophilic property changes of wood flour were examined by evaluating the water content and the rate of water uptake of samples under different relative humidity conditions. A decrease in the wood flour water content was noted after fluorination. All these studies tend to prove the efficiency of this treatment on wood hydrophilia.
authors.affiliation: Institut Pascal, UMR 6602 UBP/CNRS/IFMA, Campus de Clermont-Ferrand/Les Cézeaux, B.P. 265, 63175 Aubière, France. florence.saulnier@ifma.fr
authors.forename: Florence
authors.initials: F
authors.lastname: Saulnier
authors.forename: Marc
authors.initials: M
authors.lastname: Dubois
authors.forename: Karine
authors.initials: K
authors.lastname: Charlet
authors.forename: Lawrence
authors.initials: L
authors.lastname: Frezet
authors.forename: Alexis
authors.initials: A
authors.lastname: Beakou
mesh_terms: D000042:Absorption; D054879:Halogenation; D057927:Hydrophobic and Hydrophilic Interactions; D009682:Magnetic Resonance Spectroscopy; D028222:Picea / Q000737:chemistry / Q000648:ultrastructure; D011091:Polyesters / Q000737:chemistry*; D011208:Powders; D028224:Pseudotsuga / Q000737:chemistry / Q000648:ultrastructure; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry; D014934:Wood / Q000737:chemistry* / Q000648:ultrastructure
chemical_list: D011091:Polyesters; D011208:Powders; D014867:Water