Titre :

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

Auteur(s) :

Duchatel-Crépy, Lucie [Auteur]
Joly, Nicolas [Auteur]
Martin, Patrick [Auteur]
Marin, Adeline [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Lefebvre, Jean-Marc [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Carbohydrate Polymers

Nom court de la revue :

Carbohydrate Polymers

Numéro :

234

Pagination :

115912

Éditeur :

Elsevier BV

Date de publication :

2020-04-15

ISSN :

0144-8617

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

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 ...
Lire la suite >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.Lire moins >

Langue :

Anglais

Audience :

Internationale

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2020-11-05T16:24:30Z
2020-11-07T21:10:23Z
2020-11-16T09:52:14Z