Shear Piezoelectricity of Poly(l-lactide) ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Permalink :
Title :
Shear Piezoelectricity of Poly(l-lactide) Films Manufactured by Extrusion–Orientation: An Insight on Process–Structure–Property Relationships
Author(s) :
Ben Achour, Mohamed Aymen [Auteur]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Barrau, Sophie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Rguiti, Mohamed [Auteur]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Courtois, Christian [Auteur]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Stubbe, Birgit [Auteur]
Raquez, Jean-Marie [Auteur]
Lacrampe, Marie-France [Auteur]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Samuel, Cédric [Auteur]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Barrau, Sophie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Rguiti, Mohamed [Auteur]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Courtois, Christian [Auteur]
Laboratoire de Matériaux Céramiques et de Mathématiques [CERAMATHS]
Stubbe, Birgit [Auteur]
Raquez, Jean-Marie [Auteur]
Lacrampe, Marie-France [Auteur]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Samuel, Cédric [Auteur]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Journal title :
ACS Applied Polymer Materials
Abbreviated title :
ACS Appl. Polym. Mater.
Volume number :
5
Pages :
9761–9775
Publisher :
American Chemical Society (ACS)
Publication date :
2023-11-06
ISSN :
2637-6105
English keyword(s) :
poly(l-lactide)
extrusion
orientation
piezoelectricity
process−structure−property relationships
extrusion
orientation
piezoelectricity
process−structure−property relationships
HAL domain(s) :
Chimie/Matériaux
Chimie/Polymères
Chimie/Polymères
English abstract : [en]
Shear piezoelectric properties of uniaxially stretched poly(l-lactide) (US-PLA) films manufactured by an industrially relevant technique (i.e., extrusion–orientation without poling) are investigated, and specific insight ...
Show more >Shear piezoelectric properties of uniaxially stretched poly(l-lactide) (US-PLA) films manufactured by an industrially relevant technique (i.e., extrusion–orientation without poling) are investigated, and specific insight on the process–structure–properties relationships is provided. Two commercially available PLA grades with d-isomer content between 2 and 4% are selected. The shear piezoelectric coefficient d14 of US-PLA films tends to increase with the draw ratio applied during the orientation stage, and a maximal d14 of 5.9 pC/N is reported. However, a dramatic degradation of piezoelectric properties could be observed at elevated draw ratios, in particular for PLA grades with low d-isomer content. Structures induced by the orientation stage are subsequently explored, and relations with shear piezoelectric properties are discussed. The mesophase is detected by DSC/WAXS up to draw ratio 4 after being replaced by strain-induced crystallization at higher draw ratios. The orientation state of the amorphous phase, mesophase, and α′-crystals is assessed by 2D-WAXS and polarized FTIR. Piezoelectric properties obtained at a moderate draw ratio are supported by the amount/orientation of each phase (partly oriented amorphous phase and fully oriented mesophase/α′-crystal phase). A model is proposed to evaluate the contribution of each phase. However, other structural parameters deserve careful attention at elevated draw ratios, in particular mechanical damage and formation of voids/cavities. 2D-SAXS analysis coupled with complementary characterizations indicates that the amount of voids/cavities controls the deterioration of shear piezoelectric performances at high draw ratios. This phenomenon is critical for highly crystalline PLA grades. A final discussion is dedicated to the quality of α′-crystals formed by current orientation conditions, a factor that could also limit the d14 coefficient of US-PLA films. This work consequently demonstrates that environmentally friendly piezoelectric films could be manufactured by a straightforward process of the plastic industry and opens up several scientific/technological perspectives for their future implementation into practical applications.Show less >
Show more >Shear piezoelectric properties of uniaxially stretched poly(l-lactide) (US-PLA) films manufactured by an industrially relevant technique (i.e., extrusion–orientation without poling) are investigated, and specific insight on the process–structure–properties relationships is provided. Two commercially available PLA grades with d-isomer content between 2 and 4% are selected. The shear piezoelectric coefficient d14 of US-PLA films tends to increase with the draw ratio applied during the orientation stage, and a maximal d14 of 5.9 pC/N is reported. However, a dramatic degradation of piezoelectric properties could be observed at elevated draw ratios, in particular for PLA grades with low d-isomer content. Structures induced by the orientation stage are subsequently explored, and relations with shear piezoelectric properties are discussed. The mesophase is detected by DSC/WAXS up to draw ratio 4 after being replaced by strain-induced crystallization at higher draw ratios. The orientation state of the amorphous phase, mesophase, and α′-crystals is assessed by 2D-WAXS and polarized FTIR. Piezoelectric properties obtained at a moderate draw ratio are supported by the amount/orientation of each phase (partly oriented amorphous phase and fully oriented mesophase/α′-crystal phase). A model is proposed to evaluate the contribution of each phase. However, other structural parameters deserve careful attention at elevated draw ratios, in particular mechanical damage and formation of voids/cavities. 2D-SAXS analysis coupled with complementary characterizations indicates that the amount of voids/cavities controls the deterioration of shear piezoelectric performances at high draw ratios. This phenomenon is critical for highly crystalline PLA grades. A final discussion is dedicated to the quality of α′-crystals formed by current orientation conditions, a factor that could also limit the d14 coefficient of US-PLA films. This work consequently demonstrates that environmentally friendly piezoelectric films could be manufactured by a straightforward process of the plastic industry and opens up several scientific/technological perspectives for their future implementation into practical applications.Show less >
Language :
Anglais
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 :
2023-12-08T09:05:43Z
2023-12-08T09:08:15Z
2023-12-08T10:06:25Z
2023-12-08T09:08:15Z
2023-12-08T10:06:25Z