Technological possibilities for adding value on defective skins: Practical valorization of leather products with chromium and dyeing spots
Onem E. Yorgancioglu A. Dilek Y. Bektayev K.
June 2024SAGE Publications Ltd
Textile Research Journal
2024#94Issue 11-121306 - 1315 pp.
In this study, decolorization via a bleaching operation was carried out on chrome and dye spotted skins with several bleaches to valorize the defective leather materials. Sodium perborate, hydrogen peroxide, sodium thiosulfate, sodium percarbonate, and oxalic acid were applied as bleaching agents in production. Sodium perborate by itself was applied and combined with other bleaching agents. Combined processes were also supported with an emulsifier agent for uniform distribution and deeper penetration of bleaching agents into the fibers. Color changes and differences on leather products were determined by Konica Minolta CM-3600d test apparatus spectrophotometrically before and after the applications. Bleached leathers were processed again, re-dyed, and finished after the bleaching operations. Then, bleaching performances of the single and combination applications were also evaluated for the leather strength indicators by analyzing tensile and tear strength of the final products as well as chromium (VI) oxidation of basic chromium (III) salts used in tanning. Antibacterial properties of the final bleached products were also investigated. As a result, sodium perborate was found to provide the most effective and safe bleaching without any physical and chemical deformation by creating antibacterial activity on leather.
antibacterial , bleaching , defects , Leather , oxidation , strength , valorization
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Department of Leather Engineering, Ege University, Turkey
Ata Dilek Leather and Automotive Company, Turkey
M. Kh. Dulaty Taraz Regional University, Kazakhstan
Department of Leather Engineering
Ata Dilek Leather and Automotive Company
M. Kh. Dulaty Taraz Regional University
10 лет помогаем публиковать статьи Международный издатель
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