Título
Determination of the Number of Epoxides Groups by FTIR-HATR and Its Correlation with 1H NMR, in Epoxidized Linseed Oil
Autor
JUAN FRANCISCO NIETO ALARCON
ENRIQUE VIGUERAS SANTIAGO
SUSANA HERNANDEZ LOPEZ
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Artículo completo publicado
By varying the conditions of the epoxidation reaction, samples of epoxidized linseed oil with different epoxidation degrees were obtained. The epoxidation of linseed oil was carried out by the formation of peracetic acid in situ using acetic acid, hydrogen peroxide solution, Amberlite IR-120H as the catalyst, and toluene as solvent. The quantification of the number of epoxides was carried out by 1H-NMR and the values obtained were correlated with the absorbance of the epoxy group signal in the FTIR-HATR spectrum. The method used to quantify the absorbance of the epoxy group signal by FTIR-HATR is based on the analysis of two regions: the area between 765-854 cm-1, and the net absorbance at 821 cm-1. Both signals analysis showed high linear correlation coefficients corroborating that this methodology represents an easy, fast, and reliable technique in the quantification of epoxides in natural oils.
The authors thank to project SIEA-UAEM 4965/2020CIB, CONACYT for the Master fellowship, and to M.C. María de las Nieves Zavala from CCIQS, UAEM-UNAM for her technical support in the 1H-NMR analysis, through the intern project of the CCIQS SHL-2018.
Editor
Scientific
&
Academic Publishing
Fecha de publicación
25 de enero de 2021
Tipo de publicación
Artículo
Recurso de información
Fuente
2163-2839
Idioma
Inglés
Relación
11
Audiencia
Estudiantes
Investigadores
Repositorio Orígen
REPOSITORIO INSTITUCIONAL DE LA UAEM
Descargas
77