TiO2-SiO2 inorganic barrier composites – from synthesis to application
[ 1 ] Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] employee
2012
scientific article
english
- Textiles
- Composite materials
- TiO2-SiO2 oxide composites
- Emulsions
- Precipitation
- Dispersive and structural properties
- UV barrier properties
- Textile materials
EN The purpose of this paper is to report on a method of synthesis of TiO2-SiO2 oxide composites characterised by spherically shaped particles with sizes in the micrometric ranges, which can be applied as a new generation of textile/TiO2-SiO2 composites with barrier properties against UV radiation. Synthesis and characterisation of TiO2-SiO2 oxide composites with a high degree of dispersion were performed, and their influence on the barrier properties of textile fabrics was investigated. The precipitation was performed with the use of solutions of titanium sulphate and sodium silicate as the precipitating agent, which are cheap alternatives to organic precursors of Ti and Si. The reaction was conducted in an emulsion system, where cyclohexane was used as the organic phase and non-ionic surfactants NP3 and NP6 as emulsifiers were applied. The direction of substrate supply, concentration of the reagents and their ratio and other conditions of precipitation process were found to significantly affect the physicochemical parameters of the pigments obtained. A possibility is provided of manufacturing a new generation of textile/TiO2-SiO2 composites with barrier properties against UV radiation. Titanium sulphate, sodium silicate, cyclohexane as the organic phase, and non-ionic surfactants NP3 and NP6 as emulsifiers, were used. Synthesis of a new generation of textile/TiO2-SiO2 composites with barrier properties against UV radiation has been performed. Textile fabrics modified with hybrid composites demonstrated high absorption of UV radiation over the full wavelength range. Determination of optimum conditions of TiO2-SiO2 oxide composites precipitation to obtain products with desired physicochemical, dispersive and structural properties. Development of nano-structural textile composites with barrier properties, protecting against UV radiation.
139 - 148
0,616