Abstract
One of the directions of development in the textiles industry is the search for new technologies for producing modern multifunctional products. New solutions are sought to obtain materials that will protect humans against the harmful effects of the environment, including such factors as the activity of microorganisms and UV radiation. Products made of natural cellulose fibers are often used. In the case of this type of material, it is very important to perform appropriate pretreatment before subsequent technological processes. This treatment has the aim of removing impurities from the surface of the fibers, which results in the improvement of sorption properties and adhesion, leading directly to the better penetration of dyes and chemical modifiers into the structure of the materials. In this work, linen fabrics were subjected to a new, innovative treatment being a combination of bio-pretreatment using laccase from Cerrena unicolor and modification with CuO-SiO2 hybrid oxide microparticles by a dip-coating method. To compare the effect of alkaline or enzymatic pretreatment on the microstructure of the linen woven fabrics, SEM analysis was performed. The new textile products obtained after this combined process exhibit very good antimicrobial activity against Candida albicans, significant antibacterial activity against the Gram-negative Escherichia coli and the Gram-positive Staphylococcus aureus, as well as very good UV protection properties (ultraviolet protection factor (UPF) > 40). These innovative materials can be used especially for clothing or outdoor textiles for which resistance to microorganisms is required, as well as to protect people who are exposed to long-term, harmful effects of UV radiation.
Highlights
New, ecological solutions rendering textiles bioactive and giving them barrier properties against ultraviolet (UV) radiation are the subject of studies carried out by many research groups [1,2,3,4,5].Molecules 2020, 25, 5701; doi:10.3390/molecules25235701 www.mdpi.com/journal/moleculesAn important problem in the refinement and modification of textiles is their appropriate pretreatment before further technological processes.Use of a biotechnological method of improving the sorption and adhesive properties of textile materials may be an alternative to the previously used processes of pretreatment, such as alkaline treatment or low-temperature plasma
The main aim of this study was to develop textiles made of linen fibers to provide barrier properties against antimicrobial activity and UV radiation, using an innovative treatment that is a combination of bio-pretreatment using laccase from Cerrena unicolor and subsequent modification with CuO-SiO2 hybrid oxide microparticles
The presented improved bioreactor process of Cerrena unicolor cultivation proved to be efficient in the production of highly active laccase
Summary
Ecological solutions rendering textiles bioactive and giving them barrier properties against ultraviolet (UV) radiation are the subject of studies carried out by many research groups [1,2,3,4,5].Molecules 2020, 25, 5701; doi:10.3390/molecules25235701 www.mdpi.com/journal/moleculesAn important problem in the refinement and modification of textiles is their appropriate pretreatment before further technological processes.Use of a biotechnological method of improving the sorption and adhesive properties of textile materials may be an alternative to the previously used processes of pretreatment, such as alkaline treatment or low-temperature plasma. Ecological solutions rendering textiles bioactive and giving them barrier properties against ultraviolet (UV) radiation are the subject of studies carried out by many research groups [1,2,3,4,5]. An important problem in the refinement and modification of textiles is their appropriate pretreatment before further technological processes. Use of a biotechnological method of improving the sorption and adhesive properties of textile materials may be an alternative to the previously used processes of pretreatment, such as alkaline treatment or low-temperature plasma. Research is being done into the use of enzymes in finishing processes of textiles made of cellulose fibers [6,7,8,9,10,11]. The presence of these, due to incrustation on the amorphous part of cellulose, affects fiber rigidity [12,13,14,15]
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