Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Substitution degree and fatty chain length influence on structure and properties of fatty acid cellulose esters

Abstract : A series of fatty acid cellulose esters (FACEs) with both various degrees of substitution (from DS = 1.7 to 3) and side chain length were obtained by grafting aliphatic acid chlorides (from C10 to C16) onto cellulose backbone, in a homogeneous LiCl/DMAc medium. These materials were characterized by Fourier Transformed InfraRed (FTIR) and Nuclear Magnetic Resonance of Proton (1H NMR) spectroscopies, as well as Wide Angle X-ray Scattering (WAXS), Differential Scanning Calorimetry (DSC), mechanical analyses and chemical resistance to concentrated acid and alkali solutions. Whatever the alkyl chains length and the DS, all samples displayed a layered structure composed of a planar arrangement of parallel cellulosic backbones with fully extended flexible side chains oriented perpendicular to the planar structure without interdigitation. The alkyl chains were able to crystallize as soon as they are long enough. As the DS decreased, the plasticizing effect of the alkyl chains was less pronounced and their ability to crystallize was improved. Regarding the mechanical behavior and the chemical resistance, similar results were observed whatever the DS is.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.univ-lille.fr/hal-03006969
Contributeur : Lilloa Université de Lille <>
Soumis le : lundi 16 novembre 2020 - 10:52:23
Dernière modification le : mardi 17 novembre 2020 - 03:23:44

Identifiants

Collections

Citation

Lucie Duchatel-Crépy, Nicolas Joly, Patrick Martin, Adeline Marin, Jean-Francois Tahon, et al.. Substitution degree and fatty chain length influence on structure and properties of fatty acid cellulose esters. Carbohydrate Polymers, Elsevier, 2020, Carbohydrate Polymers, 234, pp.115912. ⟨10.1016/j.carbpol.2020.115912⟩. ⟨hal-03006969⟩

Partager

Métriques

Consultations de la notice

5