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Reaction Monitoring of Glycerol Step-Growth Polymerization Using ATR-FTIR Spectroscopy

机译：使用ATR-FTIR光谱监测甘油逐步聚合的反应

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摘要

The sustainable step-growth polymerization of glycerol is monitored in-line and off-line using an ATR-FTIR spectroscopic probe. The concentration of hydroxyl groups is monitored to provide real-time conversion data using a univariate method. Traditional off-line techniques,i.e., hydroxyl value calculation and water pro-duction monitoring, are compared to in-line and off-line ATR-FTIR spectroscopy. Fouling of the probe is observed beyond 42mol% conversion of hydroxyl groups. No statistically significant differences are found between the conversion data from off-line/in-line ATR-FTIR and two other methods at a 95% confidence level prior to fouling, and this confirms that ATR-FTIR is a reliable tool for monitoring conversion for production of oligoglycerols from a renewable feedstock.
机译：使用ATR-FTIR光谱探针在线和离线监控可持续的甘油逐步增长聚合。使用单变量方法监控羟基的浓度以提供实时转化数据。将传统的离线技术（即羟值计算和水生产监控）与在线和离线ATR-FTIR光谱进行了比较。观察到超过42mol％的羟基转化，探针结垢。在结垢之前，离线/在线ATR-FTIR的转换数据与其他两种方法在95％置信度下的统计数据之间均未发现统计学上的显着差异，这证实了ATR-FTIR是监控转换的可靠工具。由可再生原料生产低聚甘油。

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  • 来源
    《Macromolecular reaction engineering》 |2012年第3期|p.85-92|共8页
  • 作者

    Somaieh Salehpour; Marc A. Dube;

  • 作者单位

    Department of Chemical and Biological Engineering, Centre for Catalysis Research and Innovation, University of Ottawa, 161 Louis Pasteur Pvt, Ottawa, K1N 6N5, Canada;

    Department of Chemical and Biological Engineering, Centre for Catalysis Research and Innovation, University of Ottawa, 161 Louis Pasteur Pvt, Ottawa, K1N 6N5, Canada;

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