Recently, declining petroleum resources worldwide, increasing demand of developing economies for petroleum, and political and environmental concerns about fossil-based resources have led to an urgent need for environmentally friendly, renewable, sustainable, cost-effective, and biological resources in the packaging industry. Effective use of hide trimming and chicken feather waste is one of the sustainable ways to recycle solid waste from the leather and poultry industry. This research aimed to synthesize and characterize collagen hydrolysate (CH), chitosan (CS), and keratin (K) ternary films with different blend compositions (CH/CS/K, 50/50/0, 45/45/10, 40/40/20, 35/35/30, and 30/30/40). SDS-PAGE and FTIR results confirmed that CH isolated from hide trimming wastes was in type I structure, while the molecular weight of the extracted K samples was in the range of 42.5–60 kDa. The mechanical results of this study showed that the increase in the K ratio in the ternary-based films caused a significant increase in thickness and tensile strength (p < 0.05) and a significant decrease in the elongation at break (%). This study demonstrated that hide trimming and chicken feather waste could be used to produce a biodegradable film, which provides a way to maximize recycling and achieve sustainable development in the leather and poultry industry.

最近，全球石油资源的减少、发展中经济体对石油的需求增加以及对化石资源的政治和环境问题导致包装行业迫切需要环保、可再生、可持续、成本效益高的生物资源. 有效利用皮革修边和鸡毛废料是回收皮革和家禽业固体废料的可持续方式之一。本研究旨在合成和表征具有不同共混成分（CH/CS/K、50/50/0、45/45/10、40/）的胶原蛋白水解物（CH）、壳聚糖（CS）和角蛋白（K）三元薄膜。 40/20、35/35/30 和 30/30/40）。SDS-PAGE 和 FTIR 结果证实，从皮革修边废料中分离出的 CH 为 I 型结构，而提取的 K 样品的分子量在 42.5-60 kDa 范围内。本研究的力学结果表明，三元基薄膜中 K 比率的增加导致厚度和拉伸强度显着增加（p  < 0.05) 和断裂伸长率 (%) 显着降低。这项研究表明，皮革修边和鸡毛废料可用于生产可生物降解的薄膜，这为皮革和家禽行业最大限度地回收利用和实现可持续发展提供了一种途径。