RT Journal Article
T1 Tribological behaviour of novel chemically modified biopolymer-thickened lubricating greases investigated in a steel–steel rotating ball-on-three plates tribology cell
A1 Gallego Calvo, Rocío
A1 Cidade, T.
A1 Sánchez Martínez, Rubén
A1 Valencia Barragán, Concepción
A1 Franco Gómez, José María
AB In this work, model renewable and biodegradable lubricating greases based on castor oil and chemically modified biopolymers (methylcellulose, chitin and cellulosic pulp) were tribologically characterized in a steel–steel ball-on-plates tribological cell coupled to a controlled-stress rheometer, and the results were compared to those provided by conventional lithium and calcium soap-based greases. Viscous flow, sliding velocity sweep and transient friction tests were carried out and resulting wear scars in the steel plates were evaluated by means of scanning electron microscopy (SEM). Different frictional responses were found depending on the thickener, especially at high temperature. Excepting for most severe conditions, wear is negligible when using chemically modified chitin and methylcellulose-based greases as lubricants.
PB Elsevier
SN 0301-679X
SN 1879-2464 (electrónico)
YR 2016
FD 2016
LK http://hdl.handle.net/10272/13679
UL http://hdl.handle.net/10272/13679
LA eng
NO Gallego Calvo, R., Cidade, T., Sánchez Martínez, R., Valencia Barragán, C., Franco Gómez, J.: "Tribological behaviour of novel chemically modified biopolymer-thickened lubricating greases investigated in a steel–steel rotating ball-on-three plates tribology cell". Tribology International. Vol. 94, págs. 652–660, (2016). DOI: 10.1016/j.triboint.2015.10.028
NO This work is part of two research projects (CTQ2014-56038-C3-1R and TEP-1499) sponsored by MINECO-FEDER and Junta de Andalucia programmes, respectively. One of the authors (Rocio Gallego) has received a Ph.D. Research Grant (BES-2011-045029) from DIGICyT (MINECO). The authors gratefully acknowledge the financial support. Maria Teresa Cidade acknowledges the support of the Portuguese Foundation for Science and Technology through Project PEst-C/CTM/LA0025/2013 and The Portuguese Society of Rheology (SPR) for her stay in University of Huelva.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026