Determination of degree of ethoxylation of fatty alcohol ethoxylates by FTIR/ATR spectroscopy and multivalibrate calibration-Reference-Cited by-同舟云学术

Determination of degree of ethoxylation of fatty alcohol ethoxylates by FTIR/ATR spectroscopy and multivalibrate calibration

Published:2022-03-14 Issue:3 Volume:59 Page:264-268
ISSN:0932-3414
Container-title:Tenside Surfactants Detergents
language:en
Short-container-title:

Author:

Figueira Garcia Marcelo Hilario¹^ORCID

Affiliation:

1. Sell Agro, Research and Development , Av. Jose Octaviano Valerio 275 , Rondonopolis – MT , 78721-584 , Brazil

Abstract

Abstract The aim of the present work is to develop a fast and simple methodology of analysis of the degree of ethoxylation (ethylene oxide content – EO) of linear C12–C15 fatty alcohol ethoxylates using Fourier transform infrared spectroscopy with attenuated total reflectance accessory. The spectra were recorded in the range of 2000 cm−1 to 600 cm−1, with 64 scans and a resolution of 4 cm−1. The calibration of a linear model using the partial least square regression method applied to the spectral data allowed determination of the ethylene oxide content of the samples. The regression coefficient obtained for the model was R 2 = 0.9948 and the precision of the model was 0.014. The methodology is an important tool for quality control of non-ionic surfactants used in manufacturing of a broad range of final products in the chemical industry.

Publisher

Walter de Gruyter GmbH

Subject

Condensed Matter Physics,General Chemical Engineering,General Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/tsd-2021-2416/pdf

Reference10 articles.

1. Hepworth, P. Non ionic surfactants. In Chemistry and Technology of Surfactants; Farn, R. J., Ed. Blackwell Publishing: Oxford, 2006, p. 46.

2. Kumar, V. V., Das, S. FTIR spectroscopic determination of ethylene oxide content of nonionic surfactants. Indian J. Chem. 1993, 32, 1004–1005.

3. Khanmohammadi, M., Shanehsaz, M., Bagheri Garmarudi, A., Kargosha, K. Quantitative determination of tetraacetylethylenediamine in laundry powder by FTIR spectrometry using partial least squares algorithm. Tenside Surface. Deter. 2013, 45, 116–119; https://doi.org/10.3139/113.100367/html.

4. Ferreira, M. M. C. Calibração – Métodos de Regressão. In Quimiometria: conceitos, métodos e aplicações [online]; Ferreira, M.M.C, Ed.; Unicamp: Campinas, 2005.

5. Lopes, W. A., Fascio, M. Flow chart for infrared spectra interpretation of organic compounds. Quim. Nova 2004, 27, 670–673; https://doi.org/10.1590/S0100-40422004000400025.