中国塑料 ›› 2025, Vol. 39 ›› Issue (3): 86-89.DOI: 10.19491/j.issn.1001-9278.2025.03.016

• 标准与测试 • 上一篇    下一篇

红外光谱法测定聚丙烯中抗氧剂3114的含量

钟升辉1,2(), 王耀华3, 吴燕敏1, 马晶芬3, 阮玉林1, 胡准2()   

  1. 1.浙江卫星新材料科技有限公司,浙江 嘉兴 314004
    2.西安交通大学化学工程与技术学院,西安 710049
    3.东华能源(宁波)新材料有限公司,浙江 宁波 315812
  • 收稿日期:2024-05-14 出版日期:2025-03-26 发布日期:2025-03-24
  • 通讯作者: 胡准,男(1985-),博士,副教授,研究方向:催化剂开发及催化机理研究,huzhun@xjtu.edu.cn
    E-mail:230@163.com;huzhun@xjtu.edu.cn
  • 作者简介:钟升辉,男(1985-),硕士,高级工程师,研究方向:仪器分析技术、催化剂表征研究,zsh2008⁃230@163.com

Determination of Irganox 3114 in polypropylene by infrared spectrometry

ZHONG Shenghui1,2(), WANG Yaohua3, WU Yanmin1, MA Jingfen3, RUAN Yulin1, HU Zhun2()   

  1. 1.Zhejiang Satellite Science & Technology Co,Ltd,Jiaxing 314004,China
    2.School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an 710049,China
    3.Oriental Energy (Ningbo) New Material Co,Ltd,Ningbo 315812,China
  • Received:2024-05-14 Online:2025-03-26 Published:2025-03-24
  • Contact: HU Zhun E-mail:230@163.com;huzhun@xjtu.edu.cn

摘要:

采用红外光谱法定量分析了聚丙烯中抗氧剂3114的含量。对比分析抗氧剂3114、PP、PP/3114的红外谱图后,确定了抗氧剂3114在聚丙烯中的特征吸收峰为1 695 cm-1,PP的定量吸收峰为4 059 cm-1。将1/A4059作为厚度标准化因子,以A1695/A4059为横坐标,以3114含量为纵坐标,建立了抗氧剂3114的标准曲线。结果表明,抗氧剂3114的含量与A1695/A4059有良好的线性关系,线性相关系数为0.999 28。验证了厚度标准化因子的作用,在实验范围内样片厚度对3 114含量的测定结果没有影响。用本方法测定待测样品中抗氧剂3114的含量,相对标准偏差不大于1.30 %,精密度较好。用本方法测定标准品中抗氧剂3114的含量,相对误差的绝对值不大于3.27 %,准确度较高。

关键词: 红外光谱, 聚丙烯, 抗氧剂3114

Abstract:

The content of Irganox 3 114 in polypropylene was quantitatively analyzed by Fourier⁃transform infrared (FTIR) spectroscopy, and its characteristic absorption peak was determined at 1 695 cm-1. Meanwhile, the FTIR spectrum shows a quantitative absorption peak for PP at 4 059 cm-1 through comparing the infrared spectral information of Irganox 3114, PP, and PP/Irganox 3114 blend. By taking 1/A4059 as the thickness standardization factor, A1695/A4059 as the horizontal coordinate, and 3114 content as the vertical coordinate, the standard curve of Irganox 3114 was established. The results indicated that the content of Irganox 3114 had a good linear relationship with A1695/A4059, and its linear correlation coefficient was 0.999 28. The effect of thickness standardization factor was verified, and the sample thickness had no influence on the determination result of the content of Irganox 3114 over the experimental range. The relative standard deviation of this method is less than 1.30 % for the determination of Irganox 3114, and its precision is good. The absolute relative error of Irganox 3114 in standard substance is less than 3.27 %, and the accuracy of this method is higher.

Key words: infrared spectroscopy, polypropylene, irganox 3114

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