Title :

Multiscale Structure of Starches Grafted with Hydrophobic Groups: A New Analytical Strategy

Author(s) :

Quettier, Claude [Auteur]
Roquette Frères
Volant, Chloé [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Gilet, Alexandre [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Beddiaf, Fatima [Auteur]
Unité de recherche sur les Biopolymères, Interactions Assemblages [BIA]
Collinet-Fressancourt, Marion [Auteur]
Recyclage et risque [UPR Recyclage et risque]
Université de Montpellier [UM]
Falourd, Xavier [Auteur]
Unité de recherche sur les Biopolymères, Interactions Assemblages [BIA]
DESCAMPS, Nicolas [Auteur]
Roquette Frères
Wiatz, Vincent [Auteur]
Roquette Frères
Bricout, Herve [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Rolland-Sabaté, Agnès [Auteur correspondant]
Sécurité et Qualité des Produits d'Origine Végétale [SQPOV]
Unité de recherche sur les Biopolymères, Interactions Assemblages [BIA]
Mazzah, Ahmed [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Tilloy, Sebastien [Auteur]
UCCS Équipe Catalyse Supramoléculaire
Monflier, Eric [Auteur correspondant]
UCCS Équipe Catalyse Supramoléculaire

Journal title :

Molecules

Publisher :

MDPI

Publication date :

2020-06

ISSN :

1420-3049

English keyword(s) :

macromolecular characteristics
surface characterization
etherified starch
chemical composition
acetylated starch

HAL domain(s) :

Chimie/Chimie organique
Chimie

English abstract : [en]

Starch, an abundant and low-cost plant-based glucopolymer, has great potential to replace carbon-based polymers in various materials. In order to optimize its functional properties for bioplastics applications chemical ...
Show more >Starch, an abundant and low-cost plant-based glucopolymer, has great potential to replace carbon-based polymers in various materials. In order to optimize its functional properties for bioplastics applications chemical groups need to be introduced on the free hydroxyl groups in a controlled manner, so an understanding of the resulting structure-properties relationships is therefore essential. The purpose of this work was to study the multiscale structure of highly-acetylated (degree of substitution, 0.4 < DS ≤ 3) and etherified starches by using an original combination of experimental strategies and methodologies. The molecular structure and substituents repartition were investigated by developing new sample preparation strategies for specific analysis including Asymmetrical Flow Field Flow Fractionation associated with Multiangle Laser Light Scattering, Nuclear Magnetic Resonance (NMR), Raman and Time of Flight Secondary Ion Mass spectroscopies. Molar mass decrease and specific ways of chain breakage due to modification were pointed out and are correlated to the amylose content. The amorphous structuration was revealed by solid-state NMR. This original broad analytical approach allowed for the first time a large characterization of highly-acetylated starches insoluble in aqueous solvents. This strategy, then applied to characterize etherified starches, opens the way to correlate the structure to the properties of such insoluble starch-based materials.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Non spécifiée

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
ENSCL
Univ. Artois
Centrale Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Catalyse et chimie supramoléculaire (CASU)

Submission date :

2022-03-21T10:12:08Z