Ginkgo biloba leaf extract: A natural and eco-friendly stabilizer for enhancing the thermal and oxidative stability of polyethylene

IF 2.6 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2024-11-08 DOI:10.1007/s10965-024-04191-1

Jinpeng Song, Xiangyao Li, Shijie Zhang, Yan Li, Long Chen, Zhongwei Wang, Guiqing Cheng, Qing Yu, Yuxi Han

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Abstract

To improve the antioxidant capacity of polyethylene (PE), ginkgo biloba leaf extract (GBLE) was introduced into the PE matrix as a natural stabilizer for the first time. The effect of GBLE on the thermal oxidation stability, thermal stability, processing stability, mechanical properties, and long-term aging resistance of PE during multiple extrusion processing was investigated. The oxidation induction time (OIT) results showed that the addition of GBLE improved the thermal oxidation stability and long-term aging resistance of the PE matrix even after multiple extrusions. Additionally, thermogravimetric analysis revealed that GBLE significantly enhanced the thermal stability of the polymer matrix. These improvements could be attributed to the potent free radical scavenging efficiency of GBLE. OIT tests also confirmed GBLE’s resistance to extraction from the PE matrix, as well as its antioxidant activity after extraction. Moreover, the introduction of GBLE effectively enhanced the processing stability of the PE matrix, with the melt flow rate of PE-GBLE_2.0 decreasing by only about 0.17 g/10 min from the first extrusion to the fifth extrusion. Furthermore, the addition of GBLE could still maintain the good mechanical performance of the matrix after multiple extrusions. All results demonstrated that GBLE is an effective and natural multifunctional stabilizer for PE.

Graphical Abstract

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银杏叶提取物：提高聚乙烯热稳定性和氧化稳定性的天然环保型稳定剂

为提高聚乙烯（PE）的抗氧化能力，首次将银杏叶提取物（GBLE）作为天然稳定剂引入聚乙烯基体中。研究了 GBLE 在多次挤出加工过程中对聚乙烯的热氧化稳定性、热稳定性、加工稳定性、机械性能和长期耐老化性的影响。氧化诱导时间（OIT）结果表明，即使在多次挤出后，添加 GBLE 仍能提高聚乙烯基体的热氧化稳定性和长期耐老化性。此外，热重分析表明，GBLE 显著提高了聚合物基体的热稳定性。这些改善可归因于 GBLE 强大的自由基清除效率。OIT 测试也证实了 GBLE 从聚乙烯基质中的抗萃取性以及萃取后的抗氧化活性。此外，GBLE 的引入还有效提高了聚乙烯基体的加工稳定性，从第一次挤出到第五次挤出，PE-GBLE2.0 的熔体流动速率仅下降了约 0.17 克/10 分钟。此外，在多次挤出后，添加 GBLE 仍能保持基体的良好机械性能。所有结果表明，GBLE 是一种有效、天然的聚乙烯多功能稳定剂。

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.