红外光谱法对聚烯烃中抗氧剂1010的定性、定量研究

Qualitative and Quantitative Determination of Antioxidant 1010 in Polyethylene by Infrared Spectrometry

本文介绍了用红外光谱法定性、定量测定聚乙烯、聚丙烯中抗氧剂1010的情况。分析了抗氧剂1010和PE、PP粉料的FTIR图,确定了抗氧剂1010在聚烯烃中的特征吸收峰(1746cm-1),详细分析了用抗氧剂1010分别与定量的PE、PP所制样品对所测谱图和所制曲线的影响。根据抗氧剂1010的标准曲线可知,抗氧剂1010的含量与其特征峰的吸收强度呈良好的线性关系,相关系数达0．98以上,回收率最低为90．0％。该研究可以对聚乙烯、聚丙烯中的抗氧剂1010进行定性及定量,对分析抗氧剂在聚烯烃中的影响和改性有着重要的实际意义。

The qualitative and quantitative determination of antioxidant 1010 in polyethylene （PE） and polypropylene （PP） by the Fourier Transform Infrared Spectroscopy （FTIR） is presented. The FTIR spectrograms of antioxidant 1010, PE and PP are analyzed, the characteristic absorption peak of antioxidant 1010 is determined at the wavenumber of 1746^-1 and the influence of the PE and PP test parts containing a given quantity of antioxidant 1010 on the measured spectrograms and curves is analyzed in detail. According to the standard curves of the antioxidant 1010, the content of the antioxidant 1010 bear a good liuear relationship with the absorption strength of its characteristic peak. Their correlation coefficient is greater than 0.98 and the antioxidant 1010 has a recycle quotiety of 90.0% at least. This research work is useful to tile determination of the qualitative and quantitative determination of antioxidant 1010 in polyethylene （PE） and polypropylene （PP） and is of great significance to the analysis of the effect and modification of antioxidant 1010 in PE.