Journal
NANOMATERIALS
Volume 12, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/nano12152678
Keywords
titanium dioxide (TiO2); protective layer; photodegradation; beech wood (Fagus sylvatica); pine wood (Pinus sylvestris); wood cell ultrastructure; wood preservation
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Funding
- Czech Science Foundation [GA18-26297S]
- Ministry of Education, Youth and Sports of the Czech Republic (MEYS CR) [LM2018124, LM2018110]
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This study investigates the protection of wood against photodegradation by titanium dioxide (TiO2) coating and finds that TiO2 coating can provide limited protection against photodegradation.
Titanium dioxide (TiO2) is used as a UV light absorber to protect wood matter from photodegradation. In this paper, interactions between wood and TiO2 coating are studied, and the efficiency of the coating is evaluated. For the experiments, two wood species were chosen: beech (Fagus sylvatica) and pine (Pinus sylvestris). Molecular and physical modifications in coated and uncoated wood exposed to UV radiation were investigated with Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) and transmission electron microscopy (TEM). UV-VIS spectroscopy was used to describe the absorption of UV light by the TiO2 planar particles chosen for the experiment. It was demonstrated that TiO2 coating protects wood against photodegradation to a limited extent. TEM micrographs showed fissures in the wood matter around clusters of TiO2 particles in beech wood.
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