Keratin-Modified Waterborne Polyurethane: An Alternative Circular Economy Technology for Adding Value to Cattle Hair Waste from Leather Tanneries April 2024 in “JCT research” Jie Liu, Feifei Zhang, Qiao Pengfei, Jin Li-qiang, Yulu Wang, Lu Aide, Nian Xinyue This study is being processed and will be analyzed soon. View this study on link.springer.com → https://doi.org/10.1007/s11998-024-00933-4