Structural characterization and mechanical ...
Document type :
Article dans une revue scientifique
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Title :
Structural characterization and mechanical properties of dextrin-graft-poly(butyl acrylate-co-styrene) copolymers
Author(s) :
David, Adélina [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Meimoun, Julie [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Delaunay, Thierry [Auteur]
Wiatz, Vincent [Auteur]
Saint-Loup, René [Auteur]
Parcq, Julien [Auteur]
Descamps, N. [Auteur]
Huret, Audrey [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bonnet, Fanny [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Lourdin, D. [Auteur]
Unité de recherche sur les Biopolymères, Interactions Assemblages [BIA]
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Meimoun, Julie [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Delaunay, Thierry [Auteur]
Wiatz, Vincent [Auteur]
Saint-Loup, René [Auteur]
Parcq, Julien [Auteur]
Descamps, N. [Auteur]
Huret, Audrey [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bonnet, Fanny [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Lourdin, D. [Auteur]
Unité de recherche sur les Biopolymères, Interactions Assemblages [BIA]
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Journal title :
eXpress Polymer Letters
Volume number :
13
Pages :
235-247
Publication date :
2019
English keyword(s) :
biopolymers
grafted starch
structural organization
water sorption
mechanical behavior
grafted starch
structural organization
water sorption
mechanical behavior
HAL domain(s) :
Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères
Chimie/Catalyse
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères
Chimie/Catalyse
English abstract : [en]
Dextrin/starch-graft-poly(butyl acrylate-co-styrene) copolymers have been synthesized by radical graft copoly-merization and their structure and mechanical properties are reported. High molecular weight grafted chains ...
Show more >Dextrin/starch-graft-poly(butyl acrylate-co-styrene) copolymers have been synthesized by radical graft copoly-merization and their structure and mechanical properties are reported. High molecular weight grafted chains formation isfavored, leading to a low degree of substitution of starch hydroxyl groups. Wide-Angle-X-ray Scattering (WAXS) analysisindicates that all materials are amorphous and Transmission Electron Microscopy (TEM) investigations reveal a two-phasemorphology. This is further confirmed by the presence of two glass transitions, one related to the starch/dextrin macromol-ecules and sensitive to water content, and one assigned to the grafted polymers that is composition dependent. Water uptakeis controlled by dextrin/starch content but diffusivity increases with the butyl acrylate ratio. The mechanical behavior is de-pendent on monomer ratio, and water content. Increasing butyl acrylate ratio improves the ductility of the sample while ma-terials become brittle as soon as styrene ratio is predominant in the grafted chains. While no effect of molecular weight ofstarch substrate on structure and thermal behavior is evidenced, dextrin-based materials are slightly more ductile than starch-based ones. The interest of using dextrin instead of starch is further highlighted by a lower viscosity of the reactive medium,together with an improved processability, as structural materials can be obtained over a wider range of composition thanwith native starch.Show less >
Show more >Dextrin/starch-graft-poly(butyl acrylate-co-styrene) copolymers have been synthesized by radical graft copoly-merization and their structure and mechanical properties are reported. High molecular weight grafted chains formation isfavored, leading to a low degree of substitution of starch hydroxyl groups. Wide-Angle-X-ray Scattering (WAXS) analysisindicates that all materials are amorphous and Transmission Electron Microscopy (TEM) investigations reveal a two-phasemorphology. This is further confirmed by the presence of two glass transitions, one related to the starch/dextrin macromol-ecules and sensitive to water content, and one assigned to the grafted polymers that is composition dependent. Water uptakeis controlled by dextrin/starch content but diffusivity increases with the butyl acrylate ratio. The mechanical behavior is de-pendent on monomer ratio, and water content. Increasing butyl acrylate ratio improves the ductility of the sample while ma-terials become brittle as soon as styrene ratio is predominant in the grafted chains. While no effect of molecular weight ofstarch substrate on structure and thermal behavior is evidenced, dextrin-based materials are slightly more ductile than starch-based ones. The interest of using dextrin instead of starch is further highlighted by a lower viscosity of the reactive medium,together with an improved processability, as structural materials can be obtained over a wider range of composition thanwith native starch.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
ENSCL
CNRS
INRA
Centrale Lille
Univ. Artois
ENSCL
CNRS
INRA
Centrale Lille
Univ. Artois
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2019-05-17T09:25:19Z
2019-10-23T07:35:29Z
2020-12-03T15:07:24Z
2019-10-23T07:35:29Z
2020-12-03T15:07:24Z
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