Вестник войск РХБ защиты (Oct 2023)
The Joint Action of Metal and Enzymatic Nanoparticles Used for Functionalization of Protective Self-Cleaning Materials Neutralizing Organophosphates and Possessing Bactericide Activity
Abstract
The combination of several modules, including metal nanoparticles (tantalum or zinc), antimicrobial substances, enzyme nanocomplexes that provide self-purification (self-degassing) and multiple functionalization, makes it possible to create materials that provide protection against chemical and biological damaging agents. The purpose of this work is to study the combined effect of metal nanoparticles, other biocidal compounds, and nanosized enzyme complexes of hexidine-containing organophosphate hydrolase and penicillin acylase deposited on unified tissue platforms on organophosphorus compounds and bactericidal activity. Materials and research methods. The protective self-cleaning material was created on the basis of the principle of constructing modular materials with desired properties. Nanosized metal complexes and enzymatic non-covalent polyelectrolyte complexes with polyglutamic acid or antimicrobial peptides were applied to a tissue unified platform in a certain sequence and in a certain amount, and its antitoxic and antimicrobial properties were studied. The discussion of the results. With the simultaneous operation of several modules, subject to certain requirements for applying the quantity and sequence, the properties of the modules are preserved, which do not neutralize or disable the specific properties of the modules and do not interfere with other modules to perform their functions. The best results of such materials can be obtained by combining biologically inert Ta nanoparticles and a stabilized enzyme in a polyelectrolyte complex. To acquire antimicrobial properties, fibrous materials can be functionalized not only by a combination of metal nanoparticles with enzyme preparations, but also by a combination of low molecular weight antibiotics with enzymes. Conclusions. The studies performed have demonstrated the possibility of combining modules containing metal carboxylates, metal nanoparticles, and enzyme nanocomplexes for multiple functionalization of the same fibrous materials, which acquired biocidal and antichemical protective properties. New self-degassing materials have been obtained that have protective chemical and biological properties and high stability in terms of catalytic activity with respect to the main substrates of the introduced enzymes and bactericidal activity. The use of such approaches makes it possible to impart protective properties to almost any fabric or clothing made from it, on which the studied modules will be applied, which will provide the required level of protection for personnel and have a debilitating and chilling effect.
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