China Plastics ›› 2022, Vol. 36 ›› Issue (8): 115-118.DOI: 10.19491/j.issn.1001-9278.2022.08.019

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Determination of content of transparent nucleating agent in polypropylene using infrared spectroscopy

LIU Yi(), WANG Ye, SUN Wei, QU Guoxing, XU Xia, YANG Shaolin, YUAN Ning   

  1. CHN Energy Xinjiang Chemical Co,Ltd,Urumqi 831400,China
  • Received:2022-02-28 Online:2022-08-26 Published:2022-08-22

Abstract:

In this work, a method for determining the content of sorbitol acetal?type transparent nucleating agent in polypropylene PP through infrared spectrometry was established on the basis of its characteristic absorption peak at 1 073 cm-1 using an injection?molded specimen for calibration and test. This method eliminated the influence of sheet thickness on test results. The results showed that there was a good linear relationship between the content of transparent nucleating agent and the absorbance of characteristic peak with a correlation coefficient of 0.999 4. The recovery of the content was between 98.59 % and 100.02 %. This method exhibited the advantages of high speed, high precision and environmental protection, and it was suitable for determining the content of transparent nucleating agent in PP.

Key words: NX8000 transparent nucleating agent, polypropylene, infrared spectrometry

CLC Number: