Functionalization of textile materials by alkoxysilane-grafted titanium dioxide |
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Authors: | Jadwiga Sójka-Ledakowicz Joanna Lewartowska Marcin Kudzin Marcin Leonowicz Teofil Jesionowski Katarzyna Siwińska-Stefańska Andrzej Krysztafkiewicz |
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Affiliation: | (1) Textile Research Institute (IW), Brzezinska 5/15 St., 92-103 Lodz, Poland;(2) Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141 St., 02-507 Warsaw, Poland;(3) Institute of Chemical Technology and Engineering, Poznan University of Technology, M. Sklodowskiej-Curie 2 Sq., 60-965 Poznan, Poland |
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Abstract: | Modern materials, including textiles for specific applications, have to satisfy growing requirements. Regulations concerning
man and natural environment protection against harmful substances emission, UV radiation, and electromagnetic field radiation
become more and more stringent. Intensive development of nanotechnology offers great possibilities to create novel—conforming
to the requirements—multifunctional materials based on textile substrates. Nanoparticles of metal oxides, e.g., titania (TiO2), belong to a group of compounds having photocatalytic properties, which are able to absorb UV radiation and provide antibacterial
barrier. The aim of research works was the modification of selected textiles using nanoparticles of metal oxides. Nano-TiO2 and modified nano-TiO2 with aminosilane were applied. In the first stage, the works concerned the methodology development of such nanoparticles
incorporation onto selected textile substrates. Commonly used techniques, such as padding and spraying were used as well as
sol–gel coating. The evaluation of microstructure of textile fabrics covered with nanostructural titanium dioxide was performed
using high-resolution SEM and TEM electron microscopes. Assessment of modified textiles pertained to the determination of
protective properties against UV radiation and photocatalytic and antibacterial properties. Absorption spectra of textiles
were determined using double beam type of UV–Vis Jasco V-550 with integrating sphere attachment. The same apparatus was used
to determine ultraviolet protection factor (UPF) of textiles according to the standard EN 13758-1:2002. Textiles modified
with nano-TiO2 demonstrated high absorption of UV radiation in a full wavelength and their good photocatalytic properties were also confirmed. |
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