2022, Vol. 7, No. 2. - go to content...

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Shalbuev D.V., Tumurova T.B. Study of the dynamic viscosity of biopolymers obtained from substandard leather raw materials. Journal of Clothing Science. 2022; 7(2). Available at: https://kostumologiya.ru/PDF/17TLKL222.pdf (in Russian).

Study of the dynamic viscosity of biopolymers obtained from substandard leather raw materials

Shalbuev Dmitriy Valerʹevich
East Siberia State University of Technology and Management, Ulan-Ude, Russia
E-mail: shalbuevd@mail.ru
ORCID: https://orcid.org/0000-0003-0077-9977

Tumurova Tuyana Bulatovna
East Siberia State University of Technology and Management, Ulan-Ude, Russia
E-mail: tumurova_t@mail.ru
ORCID: https://orcid.org/0000-0002-2371-5549

Abstract. The influence of the method of destruction of acid-labile bonds of a collagen macromolecule on the value of the dynamic viscosity of a biopolymer obtained from substandard leather raw materials has been studied. It has been shown that the use of a fermented milk composition as an acidic agent makes it possible to obtain a biopolymer with the maximum preservation of peptide bonds, which is confirmed by a higher dynamic viscosity compared to biopolymer 2, for which lactic acid was used. Based on the results of the studies, it was found that biopolymers 1 and 2 belong to non-Newtonian fluids and exhibit thixotropic properties, which are characterized by a decrease in dynamic viscosity depending on the duration of the spindle rotation. The dynamic viscosity of biopolymer 1 was 14133.3 cPs, and that of biopolymer 2 — 2500 cPs.

Keywords: recycling; leather raw materials; fermented milk composition; lactic acid; dynamic viscosity

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