Synthesis and Properties of Novel Polyethylene‐Based Antioxidants with Hindered Phenols as Side Groups,Macromolecular Chemistry and Physics

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Synthesis and Properties of Novel Polyethylene‐Based Antioxidants with Hindered Phenols as Side Groups
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2019-12-18 , DOI: 10.1002/macp.201900410
Yin Zhang _{1,

2} , Huayi Li ₁ , Mengru Li ₃ , Weiwei Liu ₁ , Qian Li ₁ , Youliang Hu ₁

Affiliation

Novel polyethylene‐based (PE‐based) antioxidants derived from commercially available ethylene‐vinyl acetate copolymer (EVA) with PE as the backbone and hindered phenols as side groups are prepared, and their potential for application as non‐migrating polyolefin stabilizers is investigated. The synthesis route contains the typical hydrolysis of EVA and transesterification reaction between the hydrolysis product and methyl 3‐(3,5‐di‐tert‐butyl‐4‐hydroxyphenyl) propionate. Thermal stabilities of these PE‐based antioxidants (AO‐PE) are studied through thermal analysis under an air atmosphere and shown to be higher than those of antioxidant 1076 and antioxidant 1010 (AO‐1010) due to their macromolecular structures. Antioxidant activities of the AO‐PE are evaluated in polypropylene (PP) by measuring the melt flow index of multiple‐extruded stabilized PP, and the results demonstrate that the antioxidant effectiveness of these antioxidants is strongly related to the molecular weight.

中文翻译：

以受阻酚为侧基的新型聚乙烯基抗氧化剂的合成与性能

制备了以聚乙烯为主要骨架，受阻酚为侧基的新型聚乙烯基（PE基）抗氧化剂，其以PE为主要骨架，受阻酚为侧基，并研究了它们在非迁移性聚烯烃稳定剂中的应用潜力。合成路线包括典型的EVA水解以及水解产物与3-（3,5-二叔丁基-4-羟基苯基）丙酸甲酯之间的酯交换反应。这些基于PE的抗氧化剂（AO-PE）的热稳定性是通过在空气中进行热分析来研究的，由于其大分子结构，其热稳定性高于抗氧化剂1076和抗氧化剂1010（AO-1010）。通过测量多次挤出的稳定PP的熔体流动指数来评估AO‐PE在聚丙烯（PP）中的抗氧化活性，

更新日期：2019-12-18

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