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. 2021 Aug 27;13(17):2888.
doi: 10.3390/polym13172888.

Fabrication of New Multifunctional Cotton/Lycra Composites Protective Textiles through Deposition of Nano Silica Coating

Tarek Abou Elmaaty  1 , Hanan G Elsisi  2 , Ghada M Elsayad  3 , Hagar H Elhadad  3 , Khaled Sayed-Ahmed  4 , Maria Rosaria Plutino  5
Affiliations

Fabrication of New Multifunctional Cotton/Lycra Composites Protective Textiles through Deposition of Nano Silica Coating

Tarek Abou Elmaaty et al. Polymers (Basel). .

Abstract

This study aims to develop multifunctional pile cotton fabrics by implementing different compositions of lycra yarns with different densities of the cotton fabric under study. Highly dispersed silica nanoparticles (SiO2 NPs) with small sizes-in the range of 10-40 nm-were successfully prepared and were analyzed using scanning electron microscopy (SEM). The particle size distribution of nano silica was determined via dynamic laser scattering (DLS) and measurements of its zeta potential. Cotton/lycra fabrics were treated using prepared SiO2 NPs in presence of ethylenediaminetetraacetic acid (EDTA) as a crosslinking agent. Energy dispersive X-ray (EDX) analysis and scanning electron microscopy (SEM) were used to characterize the nano-treated fabrics and assure homogeneous dispersion of SiO2 NPs on the cotton/lycra composites. Additionally, the nanoparticles were screened for their in vitro antibacterial activity against human pathogens such as Gram-positive Staphylococcus aureus and Bacillus cereus and Gram-negative Escherichia coli and Pseudomonas aeruginosa strains. The functional properties of the new composite pile cotton fabrics include excellent antibacterial, highly self-cleaning, and excellent UV protection factor (UPF) properties.

Keywords: UV protection; antibacterial activity; cotton/lycra composites; self-cleaning; silica nanoparticles.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
SEM micrographs of the amorphous SiO2 NPs at different bar scales (a) 1 µm, and (b) 0.5 µm.
Figure 2
Figure 2
FTIR spectra of the amorphous silica prepared with CTAB.
Figure 3
Figure 3
Dynamic light scattering (DLS) (a) and zeta potential (b) of the obtained SiO2 NPs.
Figure 4
Figure 4
SEM images of (A–C) untreated samples. SEM images of cotton/lycra (95.5/5.5%) fabric of 15 pick/cm (D), cotton/lycra (90.8/9.2%) fabric of 19 pick/cm (E), and cotton (100%) fabric of 22 pick/cm (F) treated with SiO2 NPs.
Figure 5
Figure 5
EDX spectrum of (A) SEM image (B) cotton/lycra (95.5/5.5%) fabric of 15 pick/cm, (C) cotton/lycra (90.8/9.2%) fabric of 19 pick/cm, and (D) cotton (100%) fabric of 22 pick/cm treated with SiO2 NPs, and EDX mapping of cotton/lycra (90.8/9.2%) fabric of 19 pick/cm corresponding to (E) carbon, (F) oxygen, (G) silicon, and (H) overlap at 20 µm bar scale.
Figure 6
Figure 6
Photograph of Antibacterial Activity of the Blank and SiO2 NP/Cotton/Lycra Composites.
Figure 7
Figure 7
Self-cleaning of the blank and SiO2NP/cotton/lycra composite fabrics before and after light exposure.
See this image and copyright information in PMC

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