RT Journal Article T1 Rheological and tribological approaches as a tool for the development of sustainable lubricating greases based on nano-montmorillonite and castor oil A1 Martín Alfonso, José Enrique A1 Martín Alfonso, María José A1 Valencia Barragán, Concepción A1 Cuberes, María Teresa AB This study investigates the development of novel montmorillonite/castor oil blends to formulate sustainable lubricating greases to promote the replacement of petrochemicals industry-derived materials by substances obtained from renewable sources. Specifically, the effect of the thickener concentration on the rheological, chemical, thermal, tribological properties, and atomic force microscopy (AFM) microstructure of these systems were studied. The results showed that the C20A nanoclay content could be used to modulate the viscosity values, the linear viscoelastic functions, and tribological properties of these montmorillonite dispersions. In general, these gel-like dispersions exhibited remarkable lubricant properties; the samples showed values of the friction coefficient and wear scars similar or lower than those obtained with model bentonite grease. PB Springer Open SN 2223-7704 YR 2020 FD 2020-10 LK http://hdl.handle.net/10272/19054 UL http://hdl.handle.net/10272/19054 LA eng NO Martín Alfonso, J. E., Martín Alfonso, M. J., Valencia Barragán, C., & Cuberes, M. T. (2020). Rheological and tribological approaches as a tool for the development of sustainable lubricating greases based on nano-montmorillonite and castor oil. Friction.DOI: https://doi.org/10.1007/s40544-020-0407-y DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026