Effect of SiO$_2$ and TiO$_2$ nanoparticles on the performance of UV visible fluorescent coatings

Mahović Poljaček, Sanja (avtor), Tomašegović, Tamara (avtor), Leskovšek, Mirjam (avtor), Stanković Elesini, Urška (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: UV visible fluorescent coatings, nanoparticles, SiO$_2$, TiO$_2$
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 18 str.
• Številčenje: Vol. 11, iss. 8, art. 928
• PID: 20.500.12556/RUL-136004
• UDK: 655
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings11080928
• COBISS.SI-ID: 73204995
• Datum objave v RUL: 06.04.2022

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 02.08.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: fluorescentni UV premazi, nanodelci, SiO$_2$, TiO$_2$

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: University of Zagreb