PROSPECTS FOR GRAPHENE OXIDE APPLICATION IN STRUCTURAL FORMATION PROCESSES OF FUR SHEEPSKIN LEATHER TISSUE
Authors:
1.
KNITU
2.
KNITU
3.
Kazan National Research Technological University
(Kafedra «Plazmohimicheskie tehnologii nanomaterialov i pokrytiy»)
graduate student from 01.01.2023 until now
graduate student from 01.01.2023 until now
4.
KNITU
Type:
Article
Pages:
from 116
to 120
Status:
Published
Received:
25.12.2025
Accepted:
25.12.2025
Published:
25.12.2025
Language:
Russian
Keywords:
GRAPHENE OXIDE, DISPERSITY, NON-ISOCYANATE URETHANES, THERMODYNAMIC PARAMETERS, COLLAGEN STRUCTURING, CHROME-SAVING TANNING TECHNOLOGIES
Abstract (English):
The transformation methods of high-molecular compounds enable the development of unique properties in materials based on them. Primarily, this refers to structuring reactions that enhance thermal stability, insulating properties, and physico-mechanical characteristics. Such transformations typically occur under the influence of structuring agents, which are referred to as hardeners, vulcanizing agents, or tanning agents, depending on the industry. Graphene oxide appears promising for this purpose due to its diverse functional groups. Like collagen, whose fibers form animal dermis, graphene oxide can be considered a non-stoichiometric berthollide with a structure dependent on the synthesis method or formation conditions. This study presents the results of applying a graphene oxide and hydroxyurethane composite as a prospective component of chrome-saving technologies in fur production. The following methods were used to characterize the research objects: Fourier-transform infrared (FTIR) spectroscopy, Ultrasonic generator "I10-840" (operating frequency: 25 kHz), High-sensitivity zeta potential analyzer "ZetaPALS" for particle size control. The presence of oxygen-containing groups capable of structuring collagen fibers in leather tissue was confirmed. After dispersion at 25 kHz for 25 minutes, the graphene oxide particle size measured 23 nm. Molecular geometry visualization of urethane alcohol was performed using the Chemcraft software package. The study demonstrated the possibility of obtaining two configurational isomers of non-isocyanate monomeric carbamate, differing in hydroxyl group positioning. Thermodynamic parameters of propylene carbonate ammonolysis products were calculated using the Gaussian software package. The results indicate that graphene oxide, due to its reactive oxygen-containing groups (primarily hydroxyl and carboxyl groups), can interact with the collagen matrix, enhancing its thermal stability. The combined use of graphene oxide with urethane alcohol (1-methyl-2-hydroxyethyl urethane) accelerates the diffusion component of tanning and increases leather thermal stability up to 69°C.
The transformation methods of high-molecular compounds enable the development of unique properties in materials based on them. Primarily, this refers to structuring reactions that enhance thermal stability, insulating properties, and physico-mechanical characteristics. Such transformations typically occur under the influence of structuring agents, which are referred to as hardeners, vulcanizing agents, or tanning agents, depending on the industry. Graphene oxide appears promising for this purpose due to its diverse functional groups. Like collagen, whose fibers form animal dermis, graphene oxide can be considered a non-stoichiometric berthollide with a structure dependent on the synthesis method or formation conditions. This study presents the results of applying a graphene oxide and hydroxyurethane composite as a prospective component of chrome-saving technologies in fur production. The following methods were used to characterize the research objects: Fourier-transform infrared (FTIR) spectroscopy, Ultrasonic generator "I10-840" (operating frequency: 25 kHz), High-sensitivity zeta potential analyzer "ZetaPALS" for particle size control. The presence of oxygen-containing groups capable of structuring collagen fibers in leather tissue was confirmed. After dispersion at 25 kHz for 25 minutes, the graphene oxide particle size measured 23 nm. Molecular geometry visualization of urethane alcohol was performed using the Chemcraft software package. The study demonstrated the possibility of obtaining two configurational isomers of non-isocyanate monomeric carbamate, differing in hydroxyl group positioning. Thermodynamic parameters of propylene carbonate ammonolysis products were calculated using the Gaussian software package. The results indicate that graphene oxide, due to its reactive oxygen-containing groups (primarily hydroxyl and carboxyl groups), can interact with the collagen matrix, enhancing its thermal stability. The combined use of graphene oxide with urethane alcohol (1-methyl-2-hydroxyethyl urethane) accelerates the diffusion component of tanning and increases leather thermal stability up to 69°C.
Keywords:
GRAPHENE OXIDE, DISPERSITY, NON-ISOCYANATE URETHANES, THERMODYNAMIC PARAMETERS, COLLAGEN STRUCTURING, CHROME-SAVING TANNING TECHNOLOGIES
GRAPHENE OXIDE, DISPERSITY, NON-ISOCYANATE URETHANES, THERMODYNAMIC PARAMETERS, COLLAGEN STRUCTURING, CHROME-SAVING TANNING TECHNOLOGIES
