RT Journal Article
T1 Use of Electrospun Cellulose Acetate/Silica Composites as Multifunctional Ingredients in Eco-Friendly Semisolid Lubricant Formulations
A1 Toro Gallego, Manuel
A1 Valencia Barragán, Concepción
A1 Sánchez Carrillo, María Carmen
A1 Martín Alfonso, José Enrique
A1 Franco Gómez, José María
AB Cellulose acetate/silica (CA/SIL) nanocomposites are prepared by electrospinning and investigated as multifunctional ingredients in eco-friendly semisolid lubricant formulations. The structuring ability of these electrospun composites in castor oil and theantifriction and antiwear properties are examined through rheological and tribological experiments. The multifunctionality ofCA/SIL composites arises from a balance between the silica content and the formation of nanofiber-dominated structures. Thelinear viscoelasticity functions in the oleo-dispersions increase by several orders of magnitude with both the spinning solutionconcentration and the CA:SIL ratio. However, the rheological response primarily depends on the morphology of the nanofibermat obtained, specifically nanofiber diameter and the presence of beads. In contrast, the silica content significantly impacts thetribological performance of the oleo-dispersions regardless of nanofiber morphology. For similar nanoarchitectures and rheological responses, the friction coefficient is reduced from 0.227 to 0.108 by incorporating silica in a 10:1 CA:SIL ratio, compared withthe SIL-free electrospun CA nanofibers, while wear is completely prevented. Increasing the composite concentration from 5 to12.5wt. % enhances wear protection and the gel strength of oleo-dispersions, for example, the plateau modulus rises from 800 to42,000Pa using a composite with a 10:1 CA:SIL ratio
PB Wiley
SN 1097-4628 (electrónico)
SN 0021-8995
YR 2024
FD 2024-11
LK https://hdl.handle.net/10272/24675
UL https://hdl.handle.net/10272/24675
LA eng
NO Toro‐Gallego, M., Valencia, C., Sánchez, M. C., Martín‐Alfonso, J. E., & Franco, J. M. (2024). Use of Electrospun Cellulose Acetate/Silica Composites as Multifunctional Ingredients in Eco‐Friendly Semisolid Lubricant Formulations. In Journal of Applied Polymer Science. Wiley. https://doi.org/10.1002/app.56489
NO This work was supported by Ministerio de Ciencia, Innovación y Universidades and ERDF/EU (PID2021-125637OB-I00).This work is part of the Research Project PID2021-125637OB-I00,funded by MICIU/AEI/10.13039/501100011033 and by ERDF/EU.Funding is gratefully acknowledged. Open Access funding providedby Universidad de Huelva/CBUA thanks to the CRUE-CSIC agreementwith Wiley
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026