Viability of Keratin-nano-calcium carbonate bio-composite films from poultry waste to substitute petro-based agricultural mulches

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2025-10-18 DOI:10.1016/j.resconrec.2025.108645

Yuanyi Shao , Bingnan Mu , Yiqi Yang

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Abstract

The aim of this research is to develop keratin biofilms from feathers to substitute petro-based mulches. In-situ formed CaCO₃ nanoparticles were applied to improve the dry and wet properties of keratin films without plasticizers or coupling agents. Keratin materials have excellent biocompatibility and degradability. However, they have limited applications due to their unacceptably poor mechanical properties and wet stability. This research reports a new method of preparing CaCO₃ nanoparticles during the formation of keratin films. The improvement of the properties of keratin films using our method was better than that from most of the previous methods, achieving tensile strength, elongation at break and modulus much better than the commercially available polylactide (PLA) and polyhydroxybutyrate (PHB) films. The life cycle inventory and cost analysis indicate that our keratin films can serve as competitive, sustainable and biodegradable mulches.

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家禽粪便角蛋白-纳米碳酸钙生物复合膜替代石油基农业地膜的可行性研究

本研究的目的是从羽毛中开发角蛋白生物膜来替代石油基覆盖物。在不添加增塑剂和偶联剂的情况下，利用原位形成的CaCO3纳米颗粒改善角蛋白膜的干湿性能。角蛋白材料具有良好的生物相容性和可降解性。然而，由于其令人难以接受的较差的机械性能和湿稳定性，它们的应用受到限制。本研究报道了一种在角蛋白膜形成过程中制备CaCO3纳米颗粒的新方法。该方法对角蛋白薄膜性能的改善优于以往的大多数方法，其拉伸强度、断裂伸长率和模量均优于市购的聚乳酸（PLA）和聚羟基丁酸酯（PHB）薄膜。生命周期调查和成本分析表明，我们的角蛋白膜可以作为有竞争力的、可持续的和可生物降解的地膜。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.