Polylactide (PLA) derived from renewable resources has drawn great interests in packaging, electronics, and automotive fields because of its biodegradability, high mechanical strength, high transparency, and ease of processing. However, inherent flammability and heavy melt dripping exceedingly impede its real-world applications in the forgoing fields. The last decade has witnessed the development of a variety of eco-benign fire retardants for PLA, but to date there has been an urgent lack of a comprehensive yet critical review on this topic. Herein, three major categories of fire retardants, organic, inorganic, and inorganic/organic FRs are reviewed, and fire retardant and mechanical properties of their PLA materials are discussed. This review highlights some representative fire retardants and their modes of actions in PLA followed by performance comparisons. Some important practical applications of fire-retardant PLA also are reviewed. Finally, key challenges with current fire-retardant PLA materials are discussed and some design principles are proposed for creating fire-retardant and mechanically robust PLA materials.

源自可再生资源的聚乳酸（PLA）因其可生物降解性、高机械强度、高透明度和易加工性而在包装、电子和汽车领域引起了极大的兴趣。然而，固有的易燃性和严重的熔体滴落严重阻碍了其在上述领域的实际应用。过去十年见证了各种 PLA 生态良性阻燃剂的发展，但迄今为止，迫切缺乏对这一主题的全面而批判性的评论。在此，回顾了三大类阻燃剂，有机阻燃剂、无机阻燃剂和​​无机/有机阻燃剂，并讨论了它们的 PLA 材料的阻燃性和机械性能。本综述重点介绍了一些具有代表性的阻燃剂及其在 PLA 中的作用模式，然后进行了性能比较。还回顾了阻燃 PLA 的一些重要实际应用。最后，讨论了当前阻燃 PLA 材料的主要挑战，并提出了一些设计原则，以创建阻燃且机械坚固的 PLA 材料。