Svetlana Vihodceva

The sol-gel technology application of cotton textile processing

In this research, pure cotton textile was modified by the sol-gel technology with low thermal post-treatment temperatures: drying at 90 °C for 10 min after curing at 120, 140 and 160 °C for 2 min. The impact of the cotton textile coating by sol-gel technology, different curing temperatures and multiple washing cycles to the adhesion of the coating, textile air permeability and abrasion resistance were studied. The morphology changes of the cotton textile surface before and after coating, and after multiple washing cycles were evaluated by scanning electron microscopy. The sol-gel treatment can impart antibacterial properties to the textile against Pseudomonas aeruginosa and Staphylococcus epidermidis, by the reduction of the bacteria adhesion with the cotton textile. All test results evince about a very good coating containing Zn and Si adhesion with cotton textile fibres..

Nanolevel Functionalization of Natural Fiber Textiles

One of the main tasks of presented research are to impact the additional value on natural fabrics by adding them new properties with a metal nano-level coating, evaluate coating technologies. Having the ability to control the surface of a natural fiber offers great rewards that go far beyond pure economics as natural fibers are renewable and biodegradable. The paper describes the process of vacuum evaporation and magnetron sputtering of copper coatings on cotton textile materials, analysis of the metal coated textile surface by laser laboratory complex and SEM. The investigation results evince that laser laboratory complex measurements of reflected and through covered material transmitted light can be applied to trace the unevenness of deposited metal film on the covered fabric surface and its changes from exploitation impacts without samples destruction.

Durable hydrophobic sol-gel finishing for textiles

The surface of cotton textile was modified to create a water-repellent finishing by depositing a modifying coatings using the sol-gel technique. Treated textiles evaluated using scanning electron microscopy, X-Ray powder diffraction (XRD). The wettability of treated fabrics was characterized by water contact angle and drop test. The results showed that the cotton textile treated with 7.5 wt.% zinc acetate dihydrate sol showed excellent hydrophobic properties, water contact angle could reach 145°C without decreasing after 50 hydrothermal treatment cycles.

Evaluation of Antibacterial Properties of Flax Textiles Coated by Sol-Gel Technology

The present research reports on flax textile modification by the use of sol-gel technology with the purpose to determine their antibacterial properties. The evaluation of antibacterial activity against pathogenic microorganisms Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli was carried out by the Parallel streak method in accordance with the ATCC147 standard. The morphological changes on the flax textile surface before and after coating were evaluated by Scanning Electron Microscopy (SEM). It has been concluded that the sol-gel treatment can impart antibacterial properties to flax textiles against all tested bacteria preventing the bacteria growth.

Evaluation of dermal toxicity of antibacterial cotton textile coated by sol-gel technology

Abstract This paper reports about cotton textile modification by sol-gel technology with the purpose of obtaining antibacterial properties, evaluation of antibacterial properties and dermal toxicity tests of cotton textile with Zn and Si coating. Antibacterial properties evaluation against pathogenic microorganisms Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli made using the Parallel streak method in accordance with ATCC147 standard. For more specific evaluation of the coated textile, in vitro cytotoxicity test with epidermal HaCat cells was done. It is concluded that the coatings containing Zn and Si obtained by the sol-gel technology can impart antibacterial properties against pathogenic bacteria to the textile by preventing the bacteria from growing; strong inhibition of growth was detected for all test microorganisms. Based on the dermal toxicity test results, it is not expected that the prolonged contact of the skin with coated textiles will have a negative impact on the skin tissue – epidermis.