Characterization of linseed oil epoxidized at different percentages

 

G. López Téllez, E. Vigueras-Santiago, S. Hernández-López*

 

Laboratorio de Investigación y Desarrollo de Materiales Avanzados (LIDMA) Facultad de Química, Universidad Autónoma del Estado de México Paseo Colón esquina con Paseo Tollocan s/n, Col. Moderna de la Cruz. C.P. 50000, Toluca, México. *shernandezl@uaemex.mx

 

Recibido: 10 de junio de 2008.
Aceptado: 7 de enero de 2009.

 

Abstract

Several degree-epoxidized linseed oils (8, 20, 35, 40, 47 and 54%) were prepared for changing different reaction parameters such as temperature, amount of peroxide and enzyme of the well studied chemoenzymatic epoxidation method. The epoxidation reaction following was carried out by Infrared spectroscopy (FTIR) and Proton Nuclear Magnetic Resonance (H¹NMR) which are the most usual spectroscopes for this propose. However, microRaman spectroscopy and Differential Scanning Calorimetry (DSC) characterization were used in this work as complementary techniques. Particularly, DSC permitted to correlate the epoxy-aperture energy to each epoxidation percentage making it another optional technique for quantify epoxidation levels in triglycerides.

Keywords: Linseed oil; Enthalpic heat; Epoxy aperture; Chemoenzymatic reaction.

 

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Acknowledgements

The authors gratefully thank the financial support of UAEM and CONACyT under projects No. 1981/2004B and 25496, respectively. Especially we thanks to Dr. David Corona Becerril for the H¹NMR studies.

 

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