This paper presents the improvement of the antimicrobial character of woven fabrics based on cotton. The woven fabrics were cleaned in oxygen plasma and treated by padding with silver chloride and titanium dioxide particles. The existence of silver and titanium on woven fabrics was evidenced by electronic microscope images (SEM, EDAX) and by flame atomic absorption spectrophotometry. The antimicrobial tests were performed with two fungi: Candida albicans and Trichophyton interdigitale. The obtained antimicrobial effect was considerably higher compared to the raw fabrics. Treatment of dyed fabrics with a colloidal solution based on silver chloride and titanium dioxide particles does not considerably influence colour resistance of dyes.
With the development of textile industry and technology, the interest in creating value-added textiles is growing more and more. The global trend is to functionalize textile materials for narrow and well-defined purposes. Textile materials are increasingly subject of high quality standards and their functionalization must be very efficient and with minimal impact on the environment and human health. The purpose of this research was to determine the content of permethrin from knits made of Cell Solution® functional fibers, which provide effective protection against insects. The substance permethrin (according to WHO recommendation, C21H20Cl2O3, CAS number: 52645-53-1) is integrated into the fibers. Permethrin is a substance that acts similar to the natural pyrethrum extracted from chrysanthemum flowers. When insects get into contact with Cell Solution® PROTECTION fibers, the knockdown effect of the substance sets in. A chemically initiated stimulus causes insects to stay on the textile shorter thus reducing the risk of painful and infectious bites or strings. The repellent effect is particularly working on ticks, mites and gnats. This research also aims to make a comparison between the effect of different knitting methods (repeated washing cycles of textile materials, exposure to Weather Fastness Tester-visible light) in order to observe the stability of the insecticide incorporated into the fiber. For the extraction of permethrin from knits we used the innovative method of accelerated solvent extraction method (ASE) and for the quantification of the substance we used the liquid chromatographic method with spectrophotometric detection (HPLC-MWD). Both cis-permethrin and trans-permethrin were found in the samples, and for isomeric confirmation we analysed the extracted samples also on gas chromatography (GC-MS).
In this work it was developed a morphological analysis method of nano-and microparticles deposited on the textile substrate. This method is based on the statistical analysis of their dimensions measured by SEM (scanning electron microscopy). Towards this development, it was used a knit surface treated with TiO2-N-Fe (treatment that gives photocatalytic, antibacterial and antifungal skills). The method consists in the processing of the SEM images (previously obtained) by the insertion of labels with dimension of nano/micro-particles and the calculation of statistical parameters of values obtained. It was processed 10 SEM images of the same material from different places investigated at same magnification (in this case 8000 X), each of these images being processed in software Scandium 5.0. In each image it was measured the dimension of 10 micro/nano-particles. The requirement of a large number of dimensional measurements is because the size of the constituent particles in surface treatments, generally, has some variability. The major advantage of using Scandium 5.0 software is that it calculates automatically the statistical parameters of the set of measured values for all 10 images (average, minimum, maximum, number of values, standard deviation).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.