Extraction of Protein from Chrome Shavings, Modification with Acrylic Monomers and Further Re-Utilization in Leather Processing

  • Beena Zehra Leather Research Centre, PCSIR, D-102, SITE, South Avenue, Karachi, Tel+92-021-99333372- 6
  • Hafiz Rub Nawaz
  • Barkat Ali Solangi
  • Uzma Nadeem
Keywords: Tanned leather wastes, polymers, retanning products, quality leather.


In this study, four  retanning products were synthesized by polymerization of  extracted  protein from chrome shavings waste with acrylic monomers in the presence of  initiators. These products were applied for retanning of goat skins to evaluate their effects on quality of leather. Prepared leather samples were tested according to standard test methods. The results revealed that the proteineous products from hydrolysis of chrome shavings waste had significant improvement in quality without inserting bad effect on leather. The polymer prepared from the redox initiators provided highest yield of polymer.  The prepared retanning polymers showed better results of  tensile strength, tear strength, etc. In this way, the protein from chrome shavings may be reutilized after chemical modification as a replacement of commercial hazardous retanning products.


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