In this paper, we present a study of the effects generated by exposure to UV-C radiation on nanocomposite films made of graphene nanoplatelets dispersed in an epoxy matrix. The nanocomposite films, at different nanoparticle size and concentration, were fabricated on Mylar substrate using the spin coating process. The effects of UV-C irradiation on the surface hydrophobicity and on the electrical properties of the epoxy/graphene films were investigated using contact angle measurements and electrical impedance spectroscopy, respectively. According to our results, the UV-C irradiation selectively degrades the polymer matrix of the nanocomposite films, giving rise to more conductive and hydrophobic layers due to exposure of the graphene component of the composite material. The results presented here have important implications in the design of spacecraft components and structures destined for long-term space missions.

Analysis of ultraviolet exposure effects on the surface properties of epoxy/graphene nanocomposite films on Mylar substrate / Clausi, Marialaura; Santonicola, Mariagabriella; Schirone, Luigi; Laurenzi, Susanna. - In: ACTA ASTRONAUTICA. - ISSN 0094-5765. - STAMPA. - 134:(2017), pp. 307-313. [10.1016/j.actaastro.2017.02.017]

Analysis of ultraviolet exposure effects on the surface properties of epoxy/graphene nanocomposite films on Mylar substrate

CLAUSI, MARIALAURA;SANTONICOLA, MARIAGABRIELLA;SCHIRONE, Luigi;LAURENZI, SUSANNA
2017

Abstract

In this paper, we present a study of the effects generated by exposure to UV-C radiation on nanocomposite films made of graphene nanoplatelets dispersed in an epoxy matrix. The nanocomposite films, at different nanoparticle size and concentration, were fabricated on Mylar substrate using the spin coating process. The effects of UV-C irradiation on the surface hydrophobicity and on the electrical properties of the epoxy/graphene films were investigated using contact angle measurements and electrical impedance spectroscopy, respectively. According to our results, the UV-C irradiation selectively degrades the polymer matrix of the nanocomposite films, giving rise to more conductive and hydrophobic layers due to exposure of the graphene component of the composite material. The results presented here have important implications in the design of spacecraft components and structures destined for long-term space missions.
2017
nanocomposite films; multi-layer-insulation; UV-C radiation; graphene; mylar
01 Pubblicazione su rivista::01a Articolo in rivista
Analysis of ultraviolet exposure effects on the surface properties of epoxy/graphene nanocomposite films on Mylar substrate / Clausi, Marialaura; Santonicola, Mariagabriella; Schirone, Luigi; Laurenzi, Susanna. - In: ACTA ASTRONAUTICA. - ISSN 0094-5765. - STAMPA. - 134:(2017), pp. 307-313. [10.1016/j.actaastro.2017.02.017]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/942136
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