Colloidal and Thermal Behaviors of Some Venezuelan Kaolin Pastes for Therapeutic Applications
Metadatos
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Hernández, Ana C.; Awad, Mahmoud; Maléndez, Williams; González, Gema; López Galindo, Alberto; Sánchez Espejo, Rita María; García Villén, Fátima; Viseras Iborra, César AntonioEditorial
MDPI
Materia
Mud therapy Kaolin Thermal properties Zeta potential Rheology
Fecha
2019-12-04Referencia bibliográfica
Hernández, A. C., Awad, M. E., Meléndez, W., González, G., López-Galindo, A., Sánchez-Espejo, R., ... & Viseras, C. (2019). Colloidal and Thermal Behaviors of Some Venezuelan Kaolin Pastes for Therapeutic Applications. Minerals, 9(12), 756.
Patrocinador
This research was funded by Spanish MINECO project (CGL2016-80833R), Junta de Andalucía (group CTS-946) and a grant from the Academic mobility program between institutions (Postgraduate Ibero-American University Association, AUIP).Resumen
This work contributes to the knowledge of colloidal and thermal properties of some
important primary-originated kaolin deposits from Bolivar State, Venezuela, and their possible use as
semisolid formulations in medicinal muds for topical applications. Eight selected high purity kaolin
samples were characterized. Rheological and thermal properties were correlated to physico-chemical
characteristics of the clay suspensions (pH, Ca2+, and Mg2+ cation desorption and surface charge).
Most of the studied kaolin pastes showed adequate viscosities, acceptable skin safe pH, and good
thermal properties for pelotherapeutic uses. Three of the studied samples, in particular, showed very
high kaolinite purities (>92% kaolinite), elevated viscosities (>1 Pa · s), and good thermal and pH
performances for topical application.