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Crosslinking kinetics of the formation of lignin-aminated polyol-based polyurethane foam

FTIR‐ATR (Fourier Transform Infrared‐Attenuated Total Reflectance) spectroscopic analysis was used to study the kinetics of the formation of the polyurethane foam, which was prepared by reacting a mixture of lignin‐aminated polyol (LAP) and glycol (PEG) with diphenylmethane diisocyanates (MDI‐50) in...

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Published in:	Journal of applied polymer science 2012-07, Vol.125 (1), p.152-157
Main Authors:	Huo, Shu-Ping, Nie, Ming-Cai, Kong, Zhen-Wu, Wu, Guo-Min, Chen, Jian
Format:	Article
Language:	English
Subjects:	Applied sciences Approximation Blowing agents Cellular Crosslinking Exact sciences and technology Forms of application and semi-finished materials FTIR kinetics Materials science Mathematical models Polymer industry, paints, wood Polymers Polyols Polyurethane foam polyurethanes Reaction kinetics Spectra Technology of polymers
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creator	Huo, Shu-Ping Nie, Ming-Cai Kong, Zhen-Wu Wu, Guo-Min Chen, Jian
description	FTIR‐ATR (Fourier Transform Infrared‐Attenuated Total Reflectance) spectroscopic analysis was used to study the kinetics of the formation of the polyurethane foam, which was prepared by reacting a mixture of lignin‐aminated polyol (LAP) and glycol (PEG) with diphenylmethane diisocyanates (MDI‐50) in the presence of water as blowing agent. The crosslinking reactions were followed by monitoring the change of the absorbance of the NCO group at 2270 cm−1 in FTIR‐ATR spectra. The apparent activation energy (Ea) calculated according to n‐th order reaction model was 16.44 kJ/mol, and the frequency factor (A′) was 2.69 min−1. Furthermore, the crosslinking reaction is approximated to be a first‐order reaction. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
doi_str_mv	10.1002/app.35401
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The crosslinking reactions were followed by monitoring the change of the absorbance of the NCO group at 2270 cm−1 in FTIR‐ATR spectra. The apparent activation energy (Ea) calculated according to n‐th order reaction model was 16.44 kJ/mol, and the frequency factor (A′) was 2.69 min−1. Furthermore, the crosslinking reaction is approximated to be a first‐order reaction. © 2011 Wiley Periodicals, Inc. 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Appl. Polym. Sci</addtitle><description>FTIR‐ATR (Fourier Transform Infrared‐Attenuated Total Reflectance) spectroscopic analysis was used to study the kinetics of the formation of the polyurethane foam, which was prepared by reacting a mixture of lignin‐aminated polyol (LAP) and glycol (PEG) with diphenylmethane diisocyanates (MDI‐50) in the presence of water as blowing agent. The crosslinking reactions were followed by monitoring the change of the absorbance of the NCO group at 2270 cm−1 in FTIR‐ATR spectra. The apparent activation energy (Ea) calculated according to n‐th order reaction model was 16.44 kJ/mol, and the frequency factor (A′) was 2.69 min−1. Furthermore, the crosslinking reaction is approximated to be a first‐order reaction. © 2011 Wiley Periodicals, Inc. 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subjects	Applied sciences Approximation Blowing agents Cellular Crosslinking Exact sciences and technology Forms of application and semi-finished materials FTIR kinetics Materials science Mathematical models Polymer industry, paints, wood Polymers Polyols Polyurethane foam polyurethanes Reaction kinetics Spectra Technology of polymers
title	Crosslinking kinetics of the formation of lignin-aminated polyol-based polyurethane foam
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