Hydrolytic degradation of biodegradable ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Hydrolytic degradation of biodegradable poly(butylene adipate-co-terephthalate) (PBAT) - Towards an understanding of microplastics fragmentation
Auteur(s) :
Deshoulles, Q. [Auteur]
Gall, M. Le [Auteur]
Benali, S. [Auteur]
Université de Mons / University of Mons [UMONS]
Centre d'Innovation et de Recherche en Matériaux Polymères [CIRMAP]
Raquez, J-M. [Auteur]
Centre d'Innovation et de Recherche en Matériaux Polymères [CIRMAP]
Dreanno, C. [Auteur]
Arhant, M. [Auteur]
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
Priour, D. [Auteur]
Cerantola, S. [Auteur]
Université de Brest [UBO]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Gac, P.Y. Le [Auteur]
Gall, M. Le [Auteur]
Benali, S. [Auteur]
Université de Mons / University of Mons [UMONS]
Centre d'Innovation et de Recherche en Matériaux Polymères [CIRMAP]
Raquez, J-M. [Auteur]
Centre d'Innovation et de Recherche en Matériaux Polymères [CIRMAP]
Dreanno, C. [Auteur]
Arhant, M. [Auteur]
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
Priour, D. [Auteur]
Cerantola, S. [Auteur]
Université de Brest [UBO]
Stoclet, Gregory [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Gac, P.Y. Le [Auteur]
Titre de la revue :
Polymer Degradation and Stability
Nom court de la revue :
Polymer Degradation and Stability
Numéro :
205
Pagination :
110122
Éditeur :
Elsevier BV
Date de publication :
2022-11
ISSN :
0141-3910
Mot(s)-clé(s) en anglais :
Hydrolysis
PBAT
Molar mass
embrittlement
biodegradable
microplastics
PBAT
Molar mass
embrittlement
biodegradable
microplastics
Discipline(s) HAL :
Chimie/Matériaux
Chimie/Polymères
Chimie/Polymères
Résumé en anglais : [en]
The long-term behaviour of PBAT subjected to hydrolytic ageing is investigated in this paper. Samples were aged in water at several temperatures ranging from 80 to 100 °C for different durations. Changes in physico-chemical ...
Lire la suite >The long-term behaviour of PBAT subjected to hydrolytic ageing is investigated in this paper. Samples were aged in water at several temperatures ranging from 80 to 100 °C for different durations. Changes in physico-chemical properties were investigated through NMR, GPC, DSC and X-Ray analyses and embrittlement was assessed by tensile tests. It is demonstrated that hydrolysis of PBAT occurs first on the ester group located between the terephthalate and adipate groups leading to a decrease in molar mass. For longer ageing durations, the ester situated within the adipate group undergoes hydrolysis. An increase in crystallinity ratio and a decrease in amorphous layer thickness was observed as consequences of the chain scission process. Finally, a clear change in mechanical behaviour is noted; for the early stages of ageing, the polymer exhibits a ductile behaviour while for longer ageing durations, the polymer is brittle due to a lack of chain entanglement. This transition takes place once the molar mass of PBAT falls below 11 kg/mol, i.e. when a critical molar mass M’c is reached.Lire moins >
Lire la suite >The long-term behaviour of PBAT subjected to hydrolytic ageing is investigated in this paper. Samples were aged in water at several temperatures ranging from 80 to 100 °C for different durations. Changes in physico-chemical properties were investigated through NMR, GPC, DSC and X-Ray analyses and embrittlement was assessed by tensile tests. It is demonstrated that hydrolysis of PBAT occurs first on the ester group located between the terephthalate and adipate groups leading to a decrease in molar mass. For longer ageing durations, the ester situated within the adipate group undergoes hydrolysis. An increase in crystallinity ratio and a decrease in amorphous layer thickness was observed as consequences of the chain scission process. Finally, a clear change in mechanical behaviour is noted; for the early stages of ageing, the polymer exhibits a ductile behaviour while for longer ageing durations, the polymer is brittle due to a lack of chain entanglement. This transition takes place once the molar mass of PBAT falls below 11 kg/mol, i.e. when a critical molar mass M’c is reached.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Équipe(s) de recherche :
Ingénierie des Systèmes Polymères
Date de dépôt :
2024-01-10T15:03:48Z
2024-01-26T10:56:11Z
2024-01-26T10:56:11Z
Fichiers
- Deshoulles et al. - 2022 - Hydrolytic degradation of biodegradable poly(butyl.pdf
- Version soumise (preprint)
- Accès libre
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