Academic Journal
Shear Piezoelectricity of Poly(l-lactide) Films Manufactured by Extrusion-Orientation: An Insight on Process-Structure-Property Relationships
| العنوان: | Shear Piezoelectricity of Poly(l-lactide) Films Manufactured by Extrusion-Orientation: An Insight on Process-Structure-Property Relationships |
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| المؤلفون: | Ben Achour, Mohamed Aymen, Barrau, Sophie, Tahon, Jean-François, Rguiti, Mohamed, Courtois, Christian, Stubbe, Birgit, Raquez, Jean-Marie, Lacrampe, Marie-France, Samuel, Cédric |
| المساهمون: | S816 - Matériaux Polymères et Composites, R400 - Institut de Recherche en Science et Ingénierie des Matériaux |
| المصدر: | ACS Applied Polymer Materials, 5 (12), 9761 - 9775 (2023-12-08) |
| بيانات النشر: | American Chemical Society |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | extrusion, orientation, piezoelectricity, poly(, process−structure−property relationships, D-isomers, Draw ratio, High draw ratios, Mesophases, Piezoelectric property, Poly films, Poly-l-lactide films, Process-structure-property relationship, Process Chemistry and Technology, Polymers and Plastics, Organic Chemistry, Engineering, computing & technology, Materials science & engineering, Ingénierie, informatique & technologie, Science des matériaux & ingénierie |
| الوصف: | peer reviewed ; 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 ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2637-6105 |
| Relation: | urn:issn:2637-6105; https://orbi.umons.ac.be/handle/20.500.12907/47742; info:hdl:20.500.12907/47742 |
| DOI: | 10.1021/acsapm.3c01419 |
| الاتاحة: | https://orbi.umons.ac.be/handle/20.500.12907/47742 https://hdl.handle.net/20.500.12907/47742 https://orbi.umons.ac.be/bitstream/20.500.12907/47742/1/ben-achour-et-al-2023-shear-piezoelectricity-of-poly%28l-lactide%29-films-manufactured-by-extrusion-orientation-an-insight.pdf https://doi.org/10.1021/acsapm.3c01419 |
| Rights: | open access ; http://purl.org/coar/access_right/c_abf2 ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.F56DC875 |
| قاعدة البيانات: | BASE |
| تدمد: | 26376105 |
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| DOI: | 10.1021/acsapm.3c01419 |