天然存在的分子在聚合物和生物聚合物中的抗氧化剂/促氧化剂行为：简要综述,ACS Sustainable Chemistry & Engineering

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天然存在的分子在聚合物和生物聚合物中的抗氧化剂/促氧化剂行为：简要综述
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-07-02 00:00:00 , DOI: 10.1021/acssuschemeng.9b02127
Nadka Tz. Dintcheva ₁ , Francesca D’Anna ₂

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聚合物和生物聚合物在其加工和使用寿命期间，不断受到不同应力因素（例如氧气，热量，紫外线，机械应力，湿度等）的作用，整体上会发生氧化降解，从而导致性能和性能下降。为了提高聚合物和生物聚合物在高温下的耐受性和长期耐候性，通常在其制造过程中添加合成抗氧化剂和紫外线稳定剂。在过去的十年中，出现了一些与合成稳定剂的影响有关的担忧，并减少了它们对人体健康和环境的负面影响，用天然存在的分子替代了它们。具有相似防护能力的产品，将受到极大欢迎。已经证明几种天然的多酚，维生素和类胡萝卜素是有效和合适的稳定剂，用于保护聚合物和生物聚合物免于氧化降解。此外，值得注意的是，为了合理控制添加剂的含量，一些天然化合物在生物聚合物和聚合物中表现出浓度依赖性的抗氧化剂/促氧化剂活性。从这个角度出发，我们简要分析了与创新有关的当前结果，这些创新涉及考虑将天然分子用于聚合物和生物聚合物的保护或促氧化具有潜在的工业应用，指出了这些方法的一些优点，例如保护作用，以及缺点，例如促氧化剂和/或增塑作用。

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Anti-/Pro-Oxidant Behavior of Naturally Occurring Molecules in Polymers and Biopolymers: A Brief Review

Polymers and biopolymers are continuously subjected to the action of different stress factors, such as oxygen, heat, UV light, mechanical stress, humidity, etc., during their processing and service life, undergoing overall oxidative degradation, that causes performance and property deterioration. To improve the resistance at high temperatures and long-term weatherability of the polymers and biopolymers, usually, during their manufacturing, synthetic antioxidants and UV-light stabilizers are added. In the past decade, several concerns related to the impact of the synthetic stabilizers have emerged, and to reduce their negative effect on human health and the environment, their replacement with naturally occurring molecules, having similar protection abilities, is greatly welcome. It has been demonstrated that several natural polyphenols, vitamins, and carotenoids are efficient and suitable stabilizers for the protection of polymers and biopolymers from oxidative degradation. Besides, it is worth noting that some natural compounds exhibit concentration-dependent anti-/pro-oxidant activity in biopolymers and polymers, for the rational control of the additive contents. In this perspective, we briefly analyze the current results related to innovation in considering natural molecules for polymer and biopolymer protection or pro-oxidation, having potential industrial applications, pointing out some advantages, e.g. protection actions, and drawbacks, e.g. pro-oxidant and/or plasticizing actions, of these approaches.

更新日期：2019-07-02

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