Sustainable Bioplastics from Amyloid Fibril-Biodegradable Polymer Blends
Sustainable Bioplastics from Amyloid Fibril-Biodegradable Polymer Blends
复制标题
DOI：
10.1021/acssuschemeng.1c03937
复制
发表时间：
2021-05
影响因子：
8.4
通讯作者：
Mohammad Peydayesh;Massimo Bagnani;R. Mezzenga
中科院分区：
文献类型：
--
作者：
Mohammad Peydayesh;Massimo Bagnani;R. Mezzenga
塑料垃圾的产生是一个全球性的挑战性问题，因为它在环境中的积累正在对地球的生态系统造成毁灭性的影响。迫切需要可持续和绿色的解决方案，这与日益严格的监管和提高的生态意识相结合。这项研究提出了一种简单、可扩展的水基工艺，通过将淀粉样纤维与可生物降解的聚合物结合起来作为两个主要的构建块来生产独立、透明和灵活的生物塑料薄膜。例如，从牛奶、大豆和鸡蛋中发现的一大类食物蛋白中，可以通过变性和自组装获得淀粉样纤维。乳清在这里被用作模型蛋白质，因为它是乳制品工业的主要副产品，它的有价化为生产可持续、可生物降解和环境友好的生物塑料创造了一个宝贵的机会，将其完美地整合到循环经济中。在此背景下，我们通过详细的生命周期评估，强调了这些生物塑料相对于普通塑料和生物塑料的可持续性优势，预计这一新类别的生物塑料在缓解紧迫的塑料污染挑战方面将发挥重要作用。
Plastic waste production is a global challenging problem since its accumulation in the environment is causing devastating effects on the planet's ecosystem. Sustainable and green solutions are urgently needed, and this pairs with increasingly stronger regulations combined with improved ecological awareness. This study proposes a simple, scalable and water-based process to produce free-standing, transparent and flexible bioplastic films by combining amyloid fibrils with biodegradable polymers as two main building blocks. Amyloid fibrils can be obtained through denaturation and self-assembly from a broad class of food proteins found in milk, soy, and egg, for example. Whey is used here as a model protein, since it is the major by-product of dairy industries, and its valorization creates a valuable opportunity to produce sustainable, biodegradable, and environmentally friendly bioplastics perfectly integrated within a circular economy. Against this background, we highlight the sustainability superiority of these bioplastics over common plastics and bioplastic via a detailed life cycle assessment, anticipating an important role of this new class of bioplastics in mitigating the pressing plastic pollution challenge.