Development of a rational composition of a polyenzyme composition in the technology of bioscouring of cotton fabrics

In recent decades, research into biochemical methods of preparation of textile materials from cellulose fibers has intensified. Of particular practical importance in terms of environmental friendliness and cellulose preservation are enzymes active at low temperatures and in neutral media. Thus, the authors conducted research on bioscouring of cotton fabrics with polyenzyme compositions consisting of Belarusian preparations (Ferment LLC) of cellulolytic and pectolytic action, during which unacceptable losses of material strength after treatment were observed. The purpose of the work is to rationalize the composition of a multi-enzyme composition in the technology of bioscouring of cotton fabrics using Belarusian enzyme preparations from Ferment LLC. Bioscouring of previously deslimed plain-weave cotton fabric was carried out. The experiment was carried out using the Kano matrix with two repetitions of a series of experiments. The concentrations of enzyme preparations with cellulase and pectinase activity were selected as input factors. Capillarity, hygroscopicity and tissue tensile strength were selected as output parameters. As a result of processing experimental data, theoretical and experimental dependencies of the hygienic and physical-mechanical properties of cotton fabrics after bioscouring on the qualitative and quantitative composition of the multienzyme composition were obtained. Based on the obtained models, graphic images of the dependence of the properties of cotton fabrics after bioscouring on the qualitative and quantitative composition of the multienzyme composition were constructed. It has been established that all properties are largely influenced by the concentration of the drug with cellulolytic activity. Based on the analysis of graphs of the dependence of the hygienic and physical-mechanical properties of cotton fabrics after bio-boiling on the composition of the multienzyme composition, rational concentrations of enzyme preparations produced in Belarus were determined: Enzitex CAO – 2.5–3 g/l, Enzitex Bio-A – 2.5–3 g/l.