COLOR AND PHYSICAL PROPERTIES OF LEATHER VIA EXTREME OZONE BLEACHING APPLICATIONS
Bleaching is a good way for the preparation of fiber based products to remove the colored impurities. However, conventional bleaching processes pollute the water with chemical components and suspended solid particles. Ecological concerns have prompted to search for new solutions to reduce the enviro...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Editura Universităţii din Oradea
2022-05-01
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| Series: | Annals of the University of Oradea: Fascicle of Textiles, Leatherwork |
| Subjects: | |
| Online Access: | http://textile.webhost.uoradea.ro/Annals/Vol%2023%20no%201-2022/leather/Art%20508%20pag%2077-84.pdf |
| Summary: | Bleaching is a good way for the preparation of fiber based products to remove the colored impurities. However, conventional bleaching processes pollute the water with chemical components and suspended solid particles. Ecological concerns have prompted to search for new solutions to reduce the environmental pollution. This work aims to cleaner bleach the skin surface problems and color with ozonation process and to examine the possible physical and chemical effects on leather products under heavy process applications. In this perpective, decolorization procedure was carried out on the leathers having dyeing spots by different bleaching time of the ozonation process. The effect of ozonation time (45, 60 and 90 min) and water pick-up value (WPV) (0% and 50%) were investigated for decolorization effect on dyed leather products. After decolorizing procedure, color difference and K/S (color strength) values on leathers was spectrophotometrically measured by Konica Minolta CM-3600d testing apparatus. Extreme ozone bleaching under long proess duration was examined in terms of the strength properties of leather. Structural changes were also determined via Cr(VI) analysis after ozonation process. 90 min ozonation application provided the best bleach with 0% WPV and 50% WPV, on the other hand, 90 min as the heaviest ozone bleach condition negatively affected the physical properties of leather. |
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| ISSN: | 1843-813X 2457-4880 |