title: Structure and optical properties of plant cell wall bio-inspired materials: cellulose-lignin multilayer nanocomposites.
abstract: Interfacial affinity between lignin model compound (dehydrogenation polymer [DHP]) and cellulose nanocristals (CN) was studied before building a nanocomposite cellulose/lignin in multilayer form by spin-coating method. The adsorption isotherm of DHP was measured by ellipsometry at the liquid/CN film interface and showed that the surface concentration of adsorbed DHP increases with the bulk concentration in solution. The DHP appeared as globular structures on cellulosic film, as observed by AFM. Spreading a dense lignin layer on CN film gave rise to the disappearance of the InfraRed resonance bands related to the DHP aromatics. The film obtained from alternate layers of cellulose/DHP was transparent in visible light and had weak absorption in UV wavelengths. Optical properties measured in the visible wavelength range by ellipsometry and spectrophotometry indicated that beyond six bilayers (cellulose/DHP), the composite exhibits antireflexion properties.
authors.affiliation: Fractionnement des AgroRessources et Environnement, Reims, France.
authors.forename: Arayik
authors.initials: A
authors.lastname: Hambardzumyan
authors.forename: Michael
authors.initials: M
authors.lastname: Molinari
authors.forename: Nicolas
authors.initials: N
authors.lastname: Dumelie
authors.forename: Laurence
authors.initials: L
authors.lastname: Foulon
authors.forename: Anouck
authors.initials: A
authors.lastname: Habrant
authors.forename: Brigitte
authors.initials: B
authors.lastname: Chabbert
authors.forename: Véronique
authors.initials: V
authors.lastname: Aguié-Béghin
mesh_terms: D000327:Adsorption; D000465:Algorithms; D032402:Boehmeria / Q000737:chemistry; D002473:Cell Wall / Q000737:chemistry*; D020770:Compomers / Q000737:chemistry*; D008031:Lignin / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D053761:Nanocomposites; D053758:Nanoparticles; D010944:Plants / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D019265:Spectroscopy, Near-Infrared; D013816:Thermodynamics
chemical_list: D020770:Compomers; C036909:lignocellulose; D008031:Lignin