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Characterization of Degradation of Cotton Cellulosic Fibers Through Near Infrared Spectroscopy

机译：棉纤维素纤维降解的近红外光谱表征

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摘要

Near infrared (NIR) spectroscopy has been found to be one of the most important characterization tools for polymeric materials based on comparatively simple NIR-favorable chemical groups (i.e., C-H, O-H, and N-H). This paper focuses on characterizing degradation of cotton cellulosic fibers in a historical textile-'Curtain Dress' in the famous movie Gone With the Wind through NIR spectroscopy, and investigating morphological and molecular changes associated with appearance change such as discolorations in the same cotton textiles. In this study, we did on-site testing on the 'Curtain Dress' with the Brimrose Luminar 5030 NIR-analyzer and analyzed the NIR spectroscopy results at eight locations where different degrees of discoloration occurred on the dress. The study identified the wavelength bands according to NIR spectral absorbancies of the typical functional groups in cellulosic fibers such as C-H, C-O and O-H stretches, compared the absorbance intensities at three main wavelengths, and investigated discoloration in different areas via principal component analysis. The combination factor scores of the 1st and 2nd principal components, which accounted for 99.09 % variance of vibrations within various groups in a molecule measured through NIR, reflected effectively morphological changes in the fiber's molecular structure and degrees of discolorations.
机译：已发现近红外（NIR）光谱是基于相对简单的近红外有利化学基团（即C-H，O-H和N-H）的高分子材料最重要的表征工具之一。本文着重于通过著名的电影《飘》通过NIR光谱表征历史悠久的纺织品“窗帘裙”中棉纤维素纤维的降解，并研究与外观变化相关的形态和分子变化，例如同一棉纺织品的变色。在这项研究中，我们使用Brimrose Luminar 5030近红外分析仪在“窗帘礼服”上进行了现场测试，并分析了在礼服上发生不同程度变色的八个位置的近红外光谱结果。该研究根据纤维素纤维中典型官能团（例如C-H，C-O和O-H片段）的近红外光谱吸收率确定了波长带，比较了三个主要波长的吸收强度，并通过主成分分析研究了不同区域的变色。第一和第二主成分的组合因子得分占通过NIR测量的分子中各个组内振动的99.09％差异，有效地反映了纤维分子结构和变色程度的形态变化。

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  • 来源
    《Journal of Polymers and the Environment》 |2013年第4期|902-909|共8页
  • 作者

    Jinjiang Yan; Nicole Villarreal; Bugao Xu;

  • 作者单位

    Division of Textiles and Apparel, School of Human Ecology, University of Texas at Austin, 1 University Station A2700, GEA 205, Austin, TX 78712, USA;

    Division of Textiles and Apparel, School of Human Ecology, University of Texas at Austin, 1 University Station A2700, GEA 205, Austin, TX 78712, USA;

    Division of Textiles and Apparel, School of Human Ecology, University of Texas at Austin, 1 University Station A2700, GEA 205, Austin, TX 78712, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Cellulosic fiber; Degradation; Discoloration; NIR; Functional group;

    机译：纤维素纤维降解;变色;近红外;功能小组;

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