MODIFIED POLYSACCHARIDES APPLICATION FOR ANTISEPTIC LEATHER PROCESSING

Abstract

Urgency of the research. The leather is very sensitive to microbial degradation during processing, storage, transportation and use. Therefore, it is important to search for preparations and methods of leather treatment, providing specific fungicidal properties, depending on the purpose. Target setting. To establish the possibility of using a composition based on modified polysaccharides with the addition of PVA and Quaternary ammonium salts for leather treatment to give fungicidal properties. Actual scientific researches and issues analysis. Recent open access publications have been reviewed regarding polymeric materials, antiseptic and fungicidal preparations used to obtain of insole leather with special properties. Uninvestigated parts of general matters defining. The principle of action of many fungicidal or bactericidal products when used together has not been established. In particular, in the case of the simultaneous use of modified polysaccharides and quaternary ammonium salts for antiseptic treatment of the leather. The research objective. The purpose of the work is to research antiseptic properties of the coating based on modified polysaccharides with the addition of quaternary ammonium salts (QASc) for insole leather. The statement of basic materials. It is established that the polymer composition based on modified starch and polyvinyl alcohol with the addition of a quarter of ammonium salts gives the leather antiseptic properties, this is proved by the delay of growth of microorganisms by 3-4 mm from the edge of the sample. The relative air permeability of the leather is reduced by almost half (from 1.18 · 103 to 0.54 · 103 cm3 / cm2 • h), the leather porosity is also reduced by 5-10 % and the stiffness is increased by 40 %. Conclusions. As a result of the conducted researches it is established that although treatment of leather surface by a solution CMS: PVA and QASс reduction of the tensile strength of leather but in its physical and mechanical properties the treated leather meets the requirements for the lining, has antiseptic properties and can be used for the manufacture of insoles.