抗氧化剂
壳聚糖
没食子酸
材料科学
天然橡胶
化学
热稳定性
多酚
有机化学
核化学
化学工程
复合材料
工程类
作者
Xiaojiang Xie,Lihao Wu,Jizhong Huang,Jingwei He,Fang Liu
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2023-10-18
卷期号:5 (11): 9543-9554
被引量:6
标识
DOI:10.1021/acsapm.3c01979
摘要
In this work, an eco-friendly chitosan-based biomass macromolecular antioxidant containing double bonds and polyphenol structure (COS-UC-GA), prepared by coupling 10-undecenoyl chloride (UC) and gallic acid (GA) onto chitosan (COS), was employed as an antioxidant for styrene–butadiene rubber (SBR)/silica composites. Its effects on the anti-aging properties of SBR/silica composites were systematically explored. The corresponding small molecular organic compound gallic acid (GA), commercial antioxidant butylated hydroxytoluene (BHT), and N-isopropyl-N′-pheny-p-phenyl-ene diamine (4010NA) were used as control samples. The results of the accelerated thermal-oxidative aging test, crosslinking density test, and thermogravimetric (TG) test demonstrated that the chitosan-based biomass macromolecular antioxidant COS-UC-GA can significantly enhance the anti-aging properties, thermal stability, and apparent activation energy (E) of SBR/silica composites. Moreover, the results of the extraction resistance test indicated that the chitosan-based biomass macromolecular antioxidant COS-UC-GA can present better migration resistance and extraction resistance in SBR/silica composites compared to the corresponding small molecular organic compound GA, commercial antioxidant BHT, and 4010NA. The superior antioxidative properties of the chitosan-based biomass macromolecular antioxidant COS-UC-GA for SBR/silica composites originated from the synergistic antioxidative effects between amine or amide groups of COS-UC-GA and polyphenol structure as well as the outstanding migration resistance and volatilization resistance of COS-UC-GA. The eco-friendly chitosan-based biomass macromolecular antioxidant COS-UC-GA can be used as a promising green candidate in the rubber industry to replace traditional small molecular antioxidants.
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