Upcycling tannery sludge into micro/nano protein fibers to enhance the cellulose-based films for mechanical properties and flame retardancy. - Wei, Jiang; He, Ting; Liu, Mengke; Kong, Fanyu; Dong, Weijian; Feng, Xin; Lu, Xiaohua; Zhang, Lilong; Zhang, Kai; Zhu, Jiahua (Cellulose, 2025)