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RoblesHernandez_FuranesThinFilms.pdf (2.98 MB)

Poly(alkylene 2,5-Furanoate)s Thin Films: Morphology, Crystallinity and Nanomechanical Properties

preprint
submitted on 15.05.2020 and posted on 15.05.2020 by Beatriz Robles-Hernández, Michelina Soccio, Iker Castrillo, Giulia Guidotti, Nadia Lotti, Angel Alegria, Daniel E Martínez-Tong
Poly(alkylene 2,5-furanoate)s are considered as the most attractive and interesting alternatives to replace oil-based terephthalic polymers. These furan-based polyesters can be synthesized using fully bio-based synthetic strategies, allowing to reduce the environmental impact of plastics. At the same time, these polymers have shown outstanding thermal, mechanical and gas-barrier properties. All these results envisage their industrial use in the near future. Now, considering the downscaling of the products’ size towards the nanometer scale, we present a study of the morphology and nanomechanical properties of poly(alkylene 2,5-furanoate) thin films. Using Atomic Force Microscopy, we report the development of nanostructures upon crystallization, following different thermal treatments, for thin films with thicknesses below 200 nm. Moreover, we studied the impact of crystal growth in the nanomechanical properties of these materials. We found that the polymer thin films preserve their excellent mechanical response even in the confined geometry, as proved by the Young’s moduli values close to the GPa, accompanied by high surface stiffness, and low indentation depths. The poly(alkylene 2,5-furanoate) thin films were found to have nanomechanical properties comparable to those of the oil-based poly(ethylene terephthalate), a further evidence that in the future they could replace traditional polymers in several applications.

Funding

IJCI-2017-31600 (MCIU, SPAIN)

IT-1175-19 (BASQUE GOVERNMENT)

CA18220, COST Action FUR4Sustain

History

Email Address of Submitting Author

danielenrique.martinezt@ehu.eus

Institution

University of the Basque Country

Country

Spain

ORCID For Submitting Author

0000-0002-3115-6222

Declaration of Conflict of Interest

The authors declare no conflict of interest

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