NDLI: Effect of $SiO_{2}$ and $TiO_{2}$ Nanoparticles on the Performance of UV Visible Fluorescent Coatings

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Effect of $SiO_{2}$ and $TiO_{2}$ Nanoparticles on the Performance of UV Visible Fluorescent Coatings

Content Provider	MDPI
Author	Sanja, Mahović Poljaček Tamara, Tomašegović Mirjam, Leskovšek Elesini, Urška Stanković
Copyright Year	2021
Description	In the present research, the properties of ultraviolet (UV) visible (daylight invisible) fluorescent coatings modified by the addition of $SiO_{2}$ and $TiO_{2}$ nanoparticles were studied. Structural, surface, and mechanical properties and changes in the coatings caused by accelerated ageing were analyzed. The results showed that the addition of nanoparticles caused the changes in unaged and aged printed coatings. Reflectance measurements of modified coatings showed that addition of $TiO_{2}$ nanoparticles improved the visual effect of the unaged coatings. Furthermore, results have shown that the addition of $SiO_{2}$ did not diminish the reflectance of the modified coatings after ageing. The results of roughness measurements showed that the addition of $SiO_{2}$ decreased roughness after the ageing process, probably due to the degradation process indicated by Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) spectroscopy. The roughness of the coatings with $TiO_{2}$ nanoparticles was increased after the ageing on the samples with higher concentrations of $TiO_{2}$ due to the agglomerates of plastisol formed on the surface of the coatings, visible in SEM images. Surface analysis of coatings showed that $TiO_{2}$ caused an increase in the polarity of the surface coatings. Results of the bending stiffness showed that the addition of the nanoparticles to the coating, especially of $SiO_{2}$, significantly improved the bending stiffness of the unaged samples.
Starting Page	928
e-ISSN	20796412
DOI	10.3390/coatings11080928
Journal	Coatings
Issue Number	8
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-08-02
Access Restriction	Open
Subject Keyword	Coatings Spectroscopy Uv Visible Fluorescent Coatings Nanoparticles Sio2 Tio2
Content Type	Text
Resource Type	Article

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