Title :

A one pot one step combined radical and ring-opening route for the dual functionalization of starch in aqueous medium

Author(s) :

Meimoun, Julie [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Wiatz, Vincent [Auteur]
Saint-Loup, René [Auteur]
Parcq, Julien [Auteur]
David, adelina [Auteur]
Stoclet, Grégory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Huret, Audrey [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bonnet, Fanny [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Zinck, Philippe [Auteur correspondant]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

Carbohydrate Polymers

Volume number :

254

Pages :

117399

Publication date :

2021-02-01

ISSN :

0144-8617

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

Starch based materials are attractive bio-based alternative to fully synthetic polymers. Native starch has however limited thermoprocessability and properties and must be modified. In order to improve the properties of ...
Show more >Starch based materials are attractive bio-based alternative to fully synthetic polymers. Native starch has however limited thermoprocessability and properties and must be modified. In order to improve the properties of starch-graft-poly(butyl-acrylate-co-styrene) copolymers via a process as green as possible, we report herein a new method for the dual functionalization of the polysaccharide via a one pot one step reaction in aqueous medium combining free radical polymerizations and ring-opening chemistry. Poly(butyl acrylate) / poly(butyl acrylate-co-styrene) (ca. 60 000 g/mol) and oligo(-caprolactone) were grafted on starch with a grafting percentage up to 75 %. The copolymers show two glass transition temperatures: one around 55-60°C related to starch and a second attributed to the grafted vinyl polymers, from -46°C to 20°C depending on butyl acrylate/styrene ratio). The resulting dual functionalized materials exhibit excellent mechanical properties, with elongation at break in the range 20-210 %, while single functionalized starch shows less than 5 %.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères
Catalyse et synthèse éco-compatible (CASECO)

Submission date :

2020-11-17T13:16:20Z
2020-11-17T14:19:40Z
2020-12-11T18:26:15Z
2022-03-21T10:39:30Z