RT Journal Article
T1 Environmentally friendly tailor-made oleo-dispersions of electrospun cellulose acetate propionate nanostructures in castor oil for lubricant applications
A1 Martín Alfonso, Manuel Antonio
A1 Rubio Valle, José Fernando
A1 Hinestroza, J. P.
A1 Martín Alfonso, José Enrique
A1 Franco Gómez, José María
AB The aim of this work is to find an alternative lubricating grease formulation that can be produced from renewable and biodegradable sources with minimal risks to human health and the environment. We used a castor oil and electrospun cellulose acetate propionate (CAp) as raw materials. We hypothesized that the acetyl and propionyl groups could provide an adequate chemical compatibility with the castor oil and that the electrospun nanostructures could enable improved physical stability by creating a variety of morphologies allowing the tailoring of the rheological and tribological properties of the resulting greases. The experimental results show that the use of electrospun CAp nanostructures can indeed yield physically stable formulations, even when used at low concentrations (3 ​wt%). The resulting dispersions went through structural transitions due to changes in the thickener morphologies and/or concentration, as shown by oscillatory rheology, oil holding capacity, tackiness, and lubrication performance in metal–metal contact. We found that the formulations, containing smooth or porous CAp nanofibers, at 5 ​wt% as a thickener, possess suitable rheological and tribological properties with a performance comparable to that of traditional lithium lubricating greases.
PB Elsevier
SN 2589-9651 (electrónico)
YR 2025
FD 2025
LK https://hdl.handle.net/10272/27168
UL https://hdl.handle.net/10272/27168
LA eng
NO Martín-Alfonso, M. A., Rubio-Valle, J. F., Hinestroza, J. P., Martín-Alfonso, J. E., & Franco, J. M. (2025). Environmentally friendly tailor-made oleo-dispersions of electrospun cellulose acetate propionate nanostructures in castor oil for lubricant applications. Nano Materials Science, 7(1), 90–104. https://doi.org/10.1016/j.nanoms.2024.02.003
NO This work is part of research projects sponsored by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” (grant PID2021-125637OB-I00) and by FEDER/Junta de Andalucía Programmes (grants PY20_00751 and UHU202029). Authors gratefully acknowledge their financial support.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026