Real-time analysis of the polymerization kinetics of 1,4-butanediol and 4,4′-diphenylmethanediisocyanate by fiber-coupled Fourier transform infrared spectroscopy

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• 作者：Patrick Schuchardt ; Heinz W. Siesler
• 关键词：Polyurethane polymerization kinetics ; In ; line fiber ; coupled FT ; IR/ATR spectroscopy
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：409
• 期：3
• 页码：833-839
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Analytical Chemistry; Biochemistry, general; Laboratory Medicine; Characterization and Evaluation of Materials; Food Science; Monitoring/Environmental Analysis;
• 出版者：Springer Berlin Heidelberg
• ISSN：1618-2650
• 卷排序：409

文摘

Polyurethanes are a polymer class with large property diversity. However, despite their extreme technical importance, only few research data regarding the on-line analysis and the derivation of kinetic polymerization data are available in the literature. The present work focuses on the in-line monitoring of the solution polymerization of 4,4′-diphenylmethanediisocyanate and 1,4-butanediol by fiber-coupled FT-IR spectroscopy in the attenuated total reflection (ATR) mode at variable temperatures and the interpretation of the spectral changes as a function of polymerization progress. Furthermore, the activation energy of the solution polymerization will be derived from the kinetic data and experimental issues of the ATR in-line measurement mode will be addressed.