On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers

Abstract : The effect of the post-annealing process on different properties of poly (L-lactic acid) (PLLA) nanofibers has been investigated in view of their use in energy-harvesting devices. Polymeric PLLA nanofibers were prepared by using electrospinning and then were thermally treated above their glass transition. A detailed comparison between as-spun (amorphous) and annealed (semi-crystalline) samples was performed in terms of the crystallinity, morphology and mechanical as well as piezoelectric properties using a multi-technique approach combining DSC, XRD, FTIR, and AFM measurements. A significant increase in the crystallinity of PLLA nanofibers has been observed after the post-annealing process, together with a major improvement of the mechanical and piezoelectric properties.
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Soumis le : vendredi 17 janvier 2020 - 15:37:07
Dernière modification le : mercredi 19 février 2020 - 14:43:23

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Cuong Nguyen Thai, Sophie Barrau, Malo Dufay, Nicolas Tabary, Antonio da Costa, et al.. On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers. Applied Sciences, MDPI, 2020, Applied Sciences, 10 (2), pp.652. ⟨10.3390/app10020652⟩. ⟨hal-02444046⟩

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