A Novel Way to Avoid Cr(VI) Formation in Leather: Copper Mordanting

作者：Ozkan Cigdem Kilicarislan; Ozgunay Hasan^*; Kalender Deniz

来源：Journal of the Society of Leather Technologists and Chemists, 2017, 101(2): 94-96.

In recent decades many studies have been conducted in order to understand the exact origin of Cr(VI) in leather and find remedies for this problem and it seems that most tanners have resolved this issue in industry. However, in the present study a novel way to avoid Cr(VI) formation in leather by copper mordanting (CuSO4 center dot 5H(2)O) was investigated. 0.5 and 1.0% (w/w) of CuSO4 center dot 5H(2)O were used both standalone and also in combination with vegetable tannins which are commonly used in leather industry. From the results it was seen that both, in standalone, and in combination usage with vegetable tannins, copper seems to be a solution against formation of Cr(VI) in leather and keeping the Cr(VI) values below the permissible limits.

• 出版日期2017-4