Because of widespread public concern about plastic waste treatment and recycling, there is a global trend toward replacing non-biodegradable polymers with biodegradable polymers. However, the inherent flammability of most biodegradable polymers presents a significant barrier to their potential application, necessitating the rapid development of fire-retardant biodegradable polymers. Herein, three major categories of fire retardants (FRs), including intrinsic FRs, additive FRs, and fire-retardant coatings, especially widely studied additive FRs in the categories of organic, inorganic, and inorganic–organic, are reviewed, revealing how the physical and chemical structures of FRs affect the fire-retardant efficiency of biodegradable polymers and concluding the influencing factors of their fire retardance from the perspective of the physical and chemical structures of FRs. This work provides fundamental data and mechanistic analyses for the fire-retardant parameters of biodegradable polymers by integrating/adding diverse types of FRs, to provide guidance for fabricating highly efficient fire-retardant biodegradable polymer materials and inspiring the development of future research and application of functional biodegradable polymers toward circular economy and greater sustainability.

中文翻译：

---

可生物降解聚合物的结构-阻燃性能相关性


由于公众对塑料废物处理和回收的广泛关注，全球出现了用可生物降解聚合物取代不可生物降解聚合物的趋势。然而，大多数可生物降解聚合物固有的可燃性对其潜在应用构成了重大障碍，因此需要快速开发阻燃可生物降解聚合物。本文综述了三大类阻燃剂（FR），包括本征型阻燃剂、添加剂型阻燃剂和阻燃涂料，特别是广泛研究的有机、无机和无机-有机类别的添加剂型阻燃剂，揭示了物理性质如何影响阻燃剂的性能。阻燃剂的结构和化学结构对生物可降解聚合物阻燃效率的影响，并从阻燃剂的物理和化学结构的角度总结其阻燃性能的影响因素。该工作通过集成/添加不同类型的阻燃剂，为生物可降解聚合物的阻燃参数提供基础数据和机理分析，为制备高效阻燃可生物降解聚合物材料提供指导，并启发未来功能性阻燃材料的研究和应用发展。生物可降解聚合物实现循环经济和更大的可持续性。