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.
Highlights
Cellulose fibers are well-known for comprehending imposing characteristics like biocompatibility, non-toxicity, high water absorbency, being safe and comfortable to wear and easy to dye [1].Notwithstanding, textile fabrics based on cotton have some undesirable features such as being soiling, wrinkled, having low strength, and an inclination towards microbial attack, supporting the growth of micro-organisms
This promotes the usage of cotton/polyester blends (Co/PES) of various ratios (25:75, 35:65, 50:50, etc., depending on the requirements of end-products) for short-sleeved sport shirts and summer blouses by assuring the required physical properties and comfort in wear [2]
Lightweight non-colored or brightly-colored cotton fibers (Co)/PES garments, which are very popular for summer shirts, offer only low ultraviolet protection factor (UPF), less than 15; whilst the sufficient clothing UPF for outdoor wear should be at least 40 [3]
Summary
Notwithstanding, textile fabrics based on cotton have some undesirable features such as being soiling, wrinkled, having low strength, and an inclination towards microbial attack, supporting the growth of micro-organisms. This promotes the usage of cotton/polyester blends (Co/PES) of various ratios (25:75, 35:65, 50:50, etc., depending on the requirements of end-products) for short-sleeved sport shirts and summer blouses by assuring the required physical properties and comfort in wear [2]. These novel nano-technological accessions seem to be a good alternative to the conventional harsh chemical treatments, and should offer desirable levels of material functionality even after prolonged usage and care
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