Mechanical Behavior of Thermoplastic Starch: ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
Mechanical Behavior of Thermoplastic Starch: Rationale for the Temperature-Relative Humidity Equivalence
Author(s) :
Leroy, Lise [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Lefebvre, Jean-Marc [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Lefebvre, Jean-Marc [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Journal title :
Polymers
Abbreviated title :
Polymers
Volume number :
14
Pages :
2531
Publisher :
MDPI AG
Publication date :
2022-06-21
ISSN :
2073-4360
HAL domain(s) :
Chimie/Matériaux
English abstract : [en]
This paper aimed at understanding and rationalizing the influence of both temperature and relative humidity on the mechanical behavior of thermoplastic starch (TPS). DMA experiments revealed that water molecules impact the ...
Show more >This paper aimed at understanding and rationalizing the influence of both temperature and relative humidity on the mechanical behavior of thermoplastic starch (TPS). DMA experiments revealed that water molecules impact the crosslinking network by reducing the intermolecular hydrogen bond density, resulting in a less dense entanglement network. In addition, the in-situ X-ray characterization during hydration of starch revealed structural changes, which were ascribed to conformational changes in the starch chain, due to their interaction with the uptake water molecules. Finally, the study of TPS uniaxially stretched at different temperatures and humidity showed that the mechanical behavior of TPS could be rationalized by considering the ΔT parameter, which corresponds to the temperature difference between the drawing temperature and the glass transition temperature of TPS.Show less >
Show more >This paper aimed at understanding and rationalizing the influence of both temperature and relative humidity on the mechanical behavior of thermoplastic starch (TPS). DMA experiments revealed that water molecules impact the crosslinking network by reducing the intermolecular hydrogen bond density, resulting in a less dense entanglement network. In addition, the in-situ X-ray characterization during hydration of starch revealed structural changes, which were ascribed to conformational changes in the starch chain, due to their interaction with the uptake water molecules. Finally, the study of TPS uniaxially stretched at different temperatures and humidity showed that the mechanical behavior of TPS could be rationalized by considering the ΔT parameter, which corresponds to the temperature difference between the drawing temperature and the glass transition temperature of TPS.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2023-12-11T14:20:38Z
2023-12-13T07:54:20Z
2023-12-13T07:54:20Z
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