Quantitative Analysis of Cotton–Polyester Textile Blends from Near-Infrared Spectra

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Quantitative analysis of textile blends and textile fabrics is currently of particular interest in the industrial context. In this frame, this work investigates whether the use of Fourier transform (FT) near-infrared (NIR) spectroscopy and chemometrics is powerful for rapid and accurate quantitative analysis of cotton–polyester content in blend products. As samples of the same composition have many sources of variability that affect NIR spectra, indirect prediction is particularly challenging and a large sample population is required to design robust calibration models. Thus, a total of more than three-hundred cotton–polyester samples were selected covering the range from the 0% to 100% cotton and the corresponding NIR reflectance spectra were measured on raw fabrics. The data set obtained was used to develop multivariate models for quantitative prediction from reference measurements. A successful approach was found to rely on partial least squares (PLS) regression combined with genetic algorithms (GAs) for wavelength selection. It involved evaluating a set of calibration models considering different spectral regions. The results obtained considering 27.5% of the original variables yielded a prediction error (RMSEP) of 2.3 in percent cotton content. It demonstrates that FT-NIR spectroscopy has the potential to be used in the textile industry for the prediction of the composition of cotton–polyester blends. As a further consequence, it was observed that the spectral preprocessing and the complexity of the model are simplified compared to the full-spectrum approach. Also, the relevancy of the spectral intervals retained after variable selection can be discussed.


Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370206777412194

Affiliations: 1: Laboratoire de Spectrochimie Infrarouge et Raman (LASIR) UMR CNRS 8516, Bât.C5, Université des Sciences et Technologies de Lille (USTL) 59655 Villeneuve d'Ascq, France 2: Institut Français du Textile-Habillement, 270, rue du Faubourg Croncels, F-10042 Troyes, France

Publication date: May 1, 2006

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