On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers
| Autor: | Nguyen Thai Cuong, Sophie Barrau, Malo Dufay, Nicolas Tabary, Antonio Da Costa, Anthony Ferri, Roberto Lazzaroni, Jean-Marie Raquez, Philippe Leclère |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
electrospinning
nanofibers peakforce quantitative nanomechanical property mapping piezoresponse force microscopy intermodulation afm contact mechanics poly (l-lactic acid) Technology Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
| Zdroj: | Applied Sciences, Vol 10, Iss 2, p 652 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10020652 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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