Abstract
Activation of the surface of cotton fabrics before chemical copper plating is proposed to be carried out by applying dispersed copper particles. For this purpose, physical and chemical processes that occur in thin layers of copper chloride solutions under the influence of electromagnetic solar rays of the visible spectrum are used. Initially, copper chlorides interact with cellulose, which is the main component of the tissue, and form copper monochloride. It is shown that this interaction is stimulated by solar rays. After that, the fabric is moistened with a solution of ascorbic acid and again exposed to sunlight. Under the action of photons of solar radiation, electrons in a semiconductor acquire additional energy and restore copper to the elemental state, and the vacancies formed are filled with electrons due to the oxidation of ascorbic acid. As a result of these processes, a film is formed on the surface of the tissue containing copper particles that can catalyze chemical copper plating.
Highlights
In recent years, the use of copper as a measure to prevent the spread of bacteria has been widely recognized
Copper chlorides interact with cellulose, which is the main component of the tissue, and form copper monochloride
Monovalent copper chloride is a binary semiconductor, so when photons are exposed to electromagnetic rays of sunlight, some of the electrons passes into the conduction band and acquire the ability to restore monovalent copper
Summary
The use of copper as a measure to prevent the spread of bacteria has been widely recognized. Among the antimicrobial and antiviral properties of copper, it should be noted that it effectively inactivates methicillin-resistant strain of Staphylococcus aureus, known as" supermicrob " MRSA [1] and viruses of the SARS-Cov-1,2 type [2]. Areas of application of fabrics containing copper coatings, as well as some of its compounds, are constantly expanding [3,4,5]. Such fabrics are proposed to be used for the manufacture of medical devices, various types of military uniforms, sports clothing, underwear, and covers for weapons that protect them from various kinds of microorganisms. In Russia, the company "Center for modern social technologies SOCTECH" is widely advertised, which offers products of more than 100 names of copper-containing yarn under the General brand “Magic of Copper” [6]
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