Adsorption–desorption kinetics of silica coated on textile fabrics

Surfaces of CO and PES textile were coated by the sol–gel process using tetraethylorthosilicate (TEOS) and chloropropyltriethoxysilane (CPTS) as silica precursors.

The highest adsorption and desorption rate of silica was found for CO fabrics treated with CPTS and TEOS, respectively. The analysis of variance (ANOVA) was carried out to statistically verify the result found from adsorption and desorption experimental manipulations. The results of silica adsorption and desorption were statistically analysed according to ANOVA test with a significance level of 0.05.

Mechanical properties of textile fabrics were investigated

Scanning electron microscopy observations were taken to assess the effect of desorption in the morphology of the coated fabrics. The mechanical properties of textile fabrics were investigated by the uniaxial traction test according to NF EN ISO 13934-1:2013 standard. Thermogravimetric analysis was used to investigate the thermal stability of fabrics in air.

The results showed that both the mechanical and thermal properties of textile samples after silica desorption did not change radically. Also, their water repellency remained significant even after the desorption test.

The study has been published in Journal of Coatings Technology and Research volume 17 (2020).

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