Washing Durability and Photo-Stability of NanoTiO2-SiO2 Coatings Exhausted onto Cotton and Cotton/Polyester Fabrics

Abstract

The purpose of this study was to assess and compare the durability of TiO2-SiO2 coatings applied in three concentrations onto two lightweight cellulose-based fabrics diverse in the composition against two external factors, repeated washings and prolonged intensive UV irradiation, by observing the changes in surface morphology, investigation of optical properties, and identification of specific molecular vibrations. The scanning electron microscopy (SEM) micrographs, diffuse reflectance spectroscopy (DRS) profiles and fourier transform-infrared (FT-IR) spectra implied equal distribution of TiO2-SiO2 nanoparticles over the surfaces of both fabrics after exhaustion procedures, regarding the concentration of colloidal paste and the type of material used, followed by a slight reduction of nanoparticles after twenty washing cycles. Moreover, the newly gained, good to very good UV protective functionality proved the suitability of the employed procedure and the sufficient durability of the selected coatings. Additionally, UV irradiation mainly caused damages to the cotton. Cotton/polyester became yellower under UV, although the application of TiO2-SiO2 protected the material against yellowness.

Chitosan and nano-TiO2 coating improves the flame retardancy of dyed and undyed denim fabrics by increasing the charring

“…The ratio of nano-TiO2 used in cotton textile products varied between 0.2%-0.4% 63 and it was used between 3% - 9% by weight in another study. 64 Chitosan alone in providing flame retardancy to the fabric was sufficient. This is an important result in terms of reducing the use of chemicals in textile products.…”

Modification of Cotton and Leather Surfaces Using Cold Atmospheric Pressure Plasma and TiO2-SiO2-Reduced Graphene Oxide Nanopowders

“…Moreover, a slight spectral difference occurs between 1300 and 1000 cm −1 for all final leather samples by increasing in intensity and widening of band at around 1080 cm −1 that may be attributed to Si–O–Si stretching vibration from the SiO 2 structural network. The band centered at 550 cm −1 is due to O–Ti–O vibrations from the TiO 2 network [ 61 ]. By comparing the spectral parameters of Exp 1-LH…Exp 4-LH (with plasma treatment) and Exp 5-LH and Exp 6-LH (without plasma treatment), it can be shown that the triple-helix conformation of collagen is not destroyed under cold plasma effect [ 62 ].…”

Cotton fabrics coated with Ag-TiO2 and Ag-TiO2/reduced graphene oxide nanocomposites

“…The reflectance of cotton samples (Figure 2) is almost overlapped in the entire UV-Vis region, implying no superior UV-rays blocking properties and absorption to the visible light of the nanopowder-coated cotton samples (Chaudhari et al, 2012;Ojstršek and Fakin, 2019), probably due to the penetration of these nanoparticles into the cotton fabric material. All cotton samples show high reflectance values (>75%) across the full visible spectrum, in accordance with their white-light grey color.…”