Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/244305
Type: Artigo de periódico
Title: Determination Of Diethyleneglycol Content And Number Of Carboxylic End Groups In Poly(ethylene Terephthalate) Fibers Using Imaging And Conventional Near Infrared Spectroscopy
Author: Caetano
Viviane Fonseca; Rodrigues e Brito
Livia; Rodrigues Rohwedder
Jarbas Jose; Pasquini
Celio; Pimentel
Maria Fernanda; Vinhas
Gloria Maria
Abstract: In this work, multivariate empirical models using conventional near infrared (NIR) spectroscopy and hyperspectral images were employed, respectively, to determine and map the diethyleneglycol (DEG) content and the number of carboxylic end groups (TCG) in poly(ethylene terephthalate) fiber samples. NIR spectroscopy is a fast, clean and efficient technique. NIR spectral data were obtained using two conventional spectrometers and a hyperspectral camera. The regression models were built using partial least squares. The models showed satisfactory results for the evaluated parameters, with Root Mean Squared Error of Prediction (RMSEP) values equivalent to repeatability of the reference methods. The distribution maps of the DEG and TCG content in the fibers samples were obtained by using the models built with the average spectra of the images to estimate the pixel content of each species, allowing us to identify areas with high content of these parameters. (C) 2015 Elsevier Ltd. All rights reserved.
Subject: Line Nir Spectroscopy
Ft-ir
Pet
Polymerization
Crystallinity
Chemometrics
Degradation
Calibration
Prediction
Films
Country: OXFORD
Editor: ELSEVIER SCI LTD
Citation: Determination Of Diethyleneglycol Content And Number Of Carboxylic End Groups In Poly(ethylene Terephthalate) Fibers Using Imaging And Conventional Near Infrared Spectroscopy. Elsevier Sci Ltd, v. 49, p. 15-21 FEB-2016.
Rights: embargo
Identifier DOI: 10.1016/j.polymertesting.2015.10.013
Address: http://www.sciencedirect.com/science/article/pii/S0142941815300209
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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