title: Characterization of arabinoxylan-dehydrogenation polymer (synthetic lignin polymer) nanoparticles.
abstract: Coniferyl alcohol (G monomer) and a mixture of coniferyl alcohol/sinapyl alcohol (GS monomers, 1/1 ratio) were polymerized to dehydrogenation polymers (DHPs) in presence of two structurally related heteroxylans (HX) differing only in their phenolic substitution patterns. One (HX-40) was enriched in ferulate (FA) while the other (HX-90) was almost devoid of FA. The morphology of the resulting nanoparticles was studied by transmission electron microscopy whereas formation of particles was followed by size exclusion chromatography with online multiangle laser light scattering. HX-40-DHP-G- and HX-40-DHP-GS-derived particles display complex morphological patterns whereas HX-90-DHP-G and HX-90-DHP-GS present rather spherical shapes. The determination of particle sizes and molar masses showed that HX-90 samples formed denser particles than HX-40 ones. These differences are discussed in relation to the ferulate substitution level.
authors.affiliation: UMR Fractionnement des Agroressources et Emballages, Centre de Recherche en Environnement et Agronomie, Institut National de la Recherche Agronomique, 2 Esplanade R. Garros, 51686 Reims Cedex, France.
authors.forename: Abdellatif
authors.initials: A
authors.lastname: Barakat
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Putaux
authors.forename: Luc
authors.initials: L
authors.lastname: Saulnier
authors.forename: Brigitte
authors.initials: B
authors.lastname: Chabbert
authors.forename: Bernard
authors.initials: B
authors.lastname: Cathala
mesh_terms: D006865:Hydrogenation; D008031:Lignin / Q000737:chemistry*; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D013997:Time Factors; D014990:Xylans / Q000737:chemistry*
chemical_list: D011108:Polymers; D014990:Xylans; D008031:Lignin; C085118:arabinoxylan