Effect of Titanium Dioxide Nanoparticles on the Properties of Poly(Vinyl Alcohol)/Silica Hybrid Films Prepared by the Sol-Gel Method

This work is focused on the preparation and characterization of poly (vinyl alcohol)/silica gel/Nano-TiO2, and the study of titanium dioxide (TiO2) nanoparticles (from 1 to 5%) on the properties of poly (vinyl alcohol) (PVA)/silica films. This new material was prepared by the sol-gel method using po...

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Bibliographic Details
Published inNano hybrids and composites Vol. 38; pp. 63 - 79
Main Authors Mahdi, Billal, Rouabah, Farid
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 03.02.2023
Subjects
Alcohol
Chemical bonds
Chemical synthesis
Contact angle
Ethanol
Fourier transforms
Hydrochloric acid
Infrared analysis
Infrared spectroscopy
Nanoparticles
Polyvinyl alcohol
Silica gel
Silicon dioxide
Sol-gel processes
Tetraethyl orthosilicate
Thermogravimetric analysis
Thin films
Titanium
Titanium dioxide
Water absorption
Water resistance
Sol-Gel Method
Hybrid Films
Spectroscopic Characterizations
Silicon Dioxide
Poly(Vinyl Alcohol)
Nano-Titanium Dioxide
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Summary:This work is focused on the preparation and characterization of poly (vinyl alcohol)/silica gel/Nano-TiO2, and the study of titanium dioxide (TiO2) nanoparticles (from 1 to 5%) on the properties of poly (vinyl alcohol) (PVA)/silica films. This new material was prepared by the sol-gel method using poly (vinyl alcohol) powder with Tetraethyl Orthosilicate (TEOS) as a precursor source of silica. TEOS was hydrolyzed and condensed in water and ethanol in the presence of hydrochloric acid (HCl) used as a catalyst. Fourier transform infrared (FT-IR), water absorption, water contact angle, ultraviolet-visible spectrometry (UV-VIS), and thermogravimetric analysis (TGA) were used to characterize the hybrid films obtained. The PVA/SiO2/Nano-TiO2 films were successfully synthesized. Owing to the FT-IR Analysis, the chemical bonds have clearly shown that the PVA backbone is linked to the (SiO2-TiO2) network. UV-VIS tests indicated that the hybrid films' UV shielding properties were drastically enhanced as a result of the addition of TiO2. According to the TGA tests, the hybrid films are more heat tolerant than neat PVA films. The water contact angle results revealed that TiO2 nanoparticles used as a doping compound possess an important influence on the hydrophilicity of PVA/SiO2 as thin films. The film's water resistance has also been enhanced.
ISSN:2297-3370
2297-3400
2297-3400
DOI:10.4028/p-381bv9