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<p>A method is proposed for the rapid determination of the phase composition of polyethylene terephthalate materials using a portable Raman spectrometer. A crystallinity index is defined as the ratio of the intensity of a characteristic peak for crystalline samples to the sum of the intensities of the characteristic peaks of crystalline and amorphous samples. The correspondence between the crystallinity of the samples determined by this rapid determination procedure and from the corresponding differential scanning calorimetry data is characterized by a coefficient of determination R<sup>2</sup> = 0.9684.</p>

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Raman Spectroscopy as a Means for the Rapid Determination of the Phase Structure of Polyethylene Terephthalate

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • K. G. Kichatov,
  • T. R. Prosochkina,
  • F. M. Kalmykov,
  • A. F. Shakirov,
  • V. N. Gusakov,
  • F. Sh. Vil’danov

摘要

A method is proposed for the rapid determination of the phase composition of polyethylene terephthalate materials using a portable Raman spectrometer. A crystallinity index is defined as the ratio of the intensity of a characteristic peak for crystalline samples to the sum of the intensities of the characteristic peaks of crystalline and amorphous samples. The correspondence between the crystallinity of the samples determined by this rapid determination procedure and from the corresponding differential scanning calorimetry data is characterized by a coefficient of determination R2 = 0.9684.