Química

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Obtención de nanoarcillas mediante intercalación de las capas de arcilla bentonítica con el aminoacido l-lisina.
(Universidad Santiago de Cali, 2025) Arboleda Valencia, Lina María; Ríos Acevedo, Jhon Jairo (Director)
In the present study, organoclays were obtained from modified bentonite or montmorillonite (MMT) through a lysine intercalation process. Initially, the clay was cleaned and purified by stirring and hydrochloric acid to eliminate any organic components that could interfere with the intercalation process. Subsequently, lysine was intercalated into the clay structure. The material was characterized by Fourier transform infrared spectrophotometry (FTIR), thermogravimetric analysis (TGA), laser diffraction (LD), and scanning electron microscopy (SEM). Additionally, a physicochemical characterization was performed using standardized methodologies taken from the internal methods manual of a non-metallic industrial minerals producer. The results obtained confirmed the intercalation of lysine into montmorillonite (MMT), which demonstrated a significant increase in the swelling capacity of the lysine-MMT product compared to unintercalated MMT.