Abstract Phytic acid is a major by-product of the cereal industry. The present work reports the use for the first time of phytic acid as a natural antioxidant in polyolefins. Our purpose is to respond to the key concern of replacing petroleum-based polymer stabilizers with bio-based stabilizers, paying attention to the use of biomass. Advances in bio-based thermo-stabilizers are intensifying, such as proposing original compounds from plants; however, the development of photo-stabilizers has not evolved since the 1970s. In this study, the antioxidant efficiency of phytic acid is measured against thermo- and photo-oxidation conditions in polyolefins. Its activity is compared to natural α-tocopherol, and to synthetic Irganox 1010. Variations in the molecular structure of polypropylene PP–phytic acid films, artificially exposed to oxidation at 80 °C, are monitored by rheology. The efficiency of phytic acid as a photo-stabilizer is assessed using accelerated artificial light conditions. The results are promising, phytic acid showing spectacular natural antioxidant potential.

中文翻译：

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迈向更环保的聚烯烃：谷物废料中植酸的抗氧化作用

摘要 植酸是谷物工业的主要副产品。目前的工作报告了首次使用植酸作为聚烯烃中的天然抗氧化剂。我们的目的是响应用生物基稳定剂替代石油基聚合物稳定剂的关键问题，关注生物质的利用。生物基热稳定剂的进展正在加速，例如从植物中提出原始化合物；然而，自 1970 年代以来，光稳定剂的发展一直没有进展。在这项研究中，植酸的抗氧化效率是针对聚烯烃中的热氧化和光氧化条件进行测量的。将其活性与天然 α-生育酚和合成的 Irganox 1010 进行比较。 聚丙烯 PP-植酸薄膜的分子结构变化，在 80 °C 下人工暴露于氧化，由流变学监测。使用加速人造光条件评估植酸作为光稳定剂的效率。结果很有希望，植酸显示出惊人的天然抗氧化潜力。