Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method

Real time detection of free formaldehyde content during synthesis process of phenolic resins is of great significance for controlling the quality of resin products. In this paper, we proposed a method of near infrared (NIR) spectroscopy combined with multivariate curve resolution-alternating least s...

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Autores principales:	Xiuye Lian, Mingguang Zhang, Xiting Sun, Chunfeng Song, Hongfu Yuan, Longhai Guo, Xiaoyu Li
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Free formaldehyde content Near infrared spectroscopy Phenolic resins Online real time determination Multivariate curve resolution-alternating least squares Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/302a4c7873dc4ade88e5ef72d63f6d18
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spelling	oai:doaj.org-article:302a4c7873dc4ade88e5ef72d63f6d182021-11-24T04:23:29ZOnline real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method0142-941810.1016/j.polymertesting.2020.106584https://doaj.org/article/302a4c7873dc4ade88e5ef72d63f6d182021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820307807https://doaj.org/toc/0142-9418Real time detection of free formaldehyde content during synthesis process of phenolic resins is of great significance for controlling the quality of resin products. In this paper, we proposed a method of near infrared (NIR) spectroscopy combined with multivariate curve resolution-alternating least squares (MCR-ALS) to online real time detect free formaldehyde content during the synthesis process of phenolic resins. The absorption band of CH bonds in formaldehyde was extracted by MCR-ALS from the overlapped absorption bands of CH bonds in phenol, formaldehyde and intermediate products, and is directly utilized to monitor free formaldehyde content during polymerization process. The calculated results of MCR-ALS are highly consistent with those obtained by the chemical titration method, which indicates this method is accurate. Compared with multivariate calibration commonly used for NIR, this method does not require modeling, and is more labor-saving and easier to spread in industrial production.Xiuye LianMingguang ZhangXiting SunChunfeng SongHongfu YuanLonghai GuoXiaoyu LiElsevierarticleFree formaldehyde contentNear infrared spectroscopyPhenolic resinsOnline real time determinationMultivariate curve resolution-alternating least squaresPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106584- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Free formaldehyde content Near infrared spectroscopy Phenolic resins Online real time determination Multivariate curve resolution-alternating least squares Polymers and polymer manufacture TP1080-1185
spellingShingle	Free formaldehyde content Near infrared spectroscopy Phenolic resins Online real time determination Multivariate curve resolution-alternating least squares Polymers and polymer manufacture TP1080-1185 Xiuye Lian Mingguang Zhang Xiting Sun Chunfeng Song Hongfu Yuan Longhai Guo Xiaoyu Li Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
description	Real time detection of free formaldehyde content during synthesis process of phenolic resins is of great significance for controlling the quality of resin products. In this paper, we proposed a method of near infrared (NIR) spectroscopy combined with multivariate curve resolution-alternating least squares (MCR-ALS) to online real time detect free formaldehyde content during the synthesis process of phenolic resins. The absorption band of CH bonds in formaldehyde was extracted by MCR-ALS from the overlapped absorption bands of CH bonds in phenol, formaldehyde and intermediate products, and is directly utilized to monitor free formaldehyde content during polymerization process. The calculated results of MCR-ALS are highly consistent with those obtained by the chemical titration method, which indicates this method is accurate. Compared with multivariate calibration commonly used for NIR, this method does not require modeling, and is more labor-saving and easier to spread in industrial production.
format	article
author	Xiuye Lian Mingguang Zhang Xiting Sun Chunfeng Song Hongfu Yuan Longhai Guo Xiaoyu Li
author_facet	Xiuye Lian Mingguang Zhang Xiting Sun Chunfeng Song Hongfu Yuan Longhai Guo Xiaoyu Li
author_sort	Xiuye Lian
title	Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
title_short	Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
title_full	Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
title_fullStr	Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
title_full_unstemmed	Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method
title_sort	online real time determination of free formaldehyde content during polymerization process of phenolic resin by nir spectra and a modeling-free method
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/302a4c7873dc4ade88e5ef72d63f6d18
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Online real time determination of free formaldehyde content during polymerization process of phenolic resin by NIR spectra and a modeling-free method

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