Non-covalent in situ self-assembly of fruit peel waste into eco-friendly pectocellulosic bioplastics with high strength, flexibility and processability properties

文献类型： 外文期刊

第一作者： Zhang, Shikai

作者： Zhang, Shikai;Zhang, Shikai;Li, Houshen;Zhang, Bowen;Ai, Shiyun;Zhang, Shikai;Shan, Yang;Ding, Shenghua;Zhang, Bowen

作者机构：

关键词： Plastics pollution; Fruit wastes management; Bioplastics; Trade-offing; Sustainability; Circular economy

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）

ISSN： 1385-8947

年卷期： 2025 年 504 卷

页码：

收录情况： SCI

摘要： Converting fruit peel wastes into degradable bioplastics has brought dawn to solve the severe plastic pollution and inefficient organic food waste management. However, it remains a challenge to convert peel wastes into bioplastics without decomposing their biocomponents. Furthermore, most of the bioplastics currently being researched have poor performance, especially in terms of trade-offing high strength, toughness, and good processability. Here, we utilize a noncovalent-mediated design to convert peel waste into pectocellulosic bioplastic that features the in situ ordered self-assembly of cellulose and pectin in the peel into a structure similar to a carboxylic acid dimer via hydrogen bonding. Benefiting from efficient energy dissipation mechanisms and reversible hydrogen bonding interactions, pectocellulosic bioplastics exhibit excellent mechanical properties (superior to most petrochemical-based and bio-based plastic materials), and can be molded into 2D/3D shapes or reprocessed into new plastics, realizing a combination of high strength (up to 50.5 MPa), toughness (up to 5.1 MJ/m(3)) and good processability. These bioplastics also combine biosafety (48 h cell viability > 85 %), biodegradability, and durability. Based on these characteristics, these pectocellulosic bioplastics can be considered as a candidate for petrochemical plastics, particularly suitable for some sensitive applications such as food inner packaging. Excitingly, the universality of this strategy in a variety of peel wastes has been verified. This work highlights the transformative potential of converting peel waste into valuable materials, providing a sustainable solution to plastic pollution and organic waste management.

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