RT Journal Article
T1 Exploration of low-sulfonate lignin electrospinning conditions for the development of new renewable lubricant formulations
A1 Rubio Valle, José Fernando
A1 Valencia Barragán, Concepción
A1 Estrada Villegas, Gethzemani Mayeli
A1 Martín Alfonso, José Enrique
A1 Franco Gómez, José María
AB This study explores the preparation of lubricating oleo-dispersions using electrospun nanofibrous matsmade from low-sulfonate lignin (LSL) and polycaprolactone (PCL). The rheological and tribological propertiesof the oleo-dispersions were significantly modulated for the first time through the exploration ofLSL/PCL ratio and electrospinning conditions such as applied voltage, distance between the tip and collector,flow rate, ambient humidity, and collector configuration. Adequate uniform ultrathin fibers andSmall-amplitude oscillatory shear (SAOS) functions of the oleo-dispersions, with storage modulus valuesranging from 102 to 105 Pa at 25 °C, were obtained with a flow rate of 0.5 ml h−1, an applied voltage of 15kV, relative humidity 45% and a static collector. The LSL/PCL ratio directly affected the mechanical propertiesof the membranes, influencing stiffness and wear resistance. Higher PCL content enhanced membranestiffness, reflected in increased SAOS values, but also led to higher friction coefficients (from 0.11 to0.18) and more pronounced wear traces (measured by wear diameter: 440 to 860 μm). These interactionsunderscore the complex relationship between micro- and/or nano-structures and tribological performance.This study establishes a clear link between electrospinning conditions and the performance ofoleo-dispersions, offering a versatile platform for the development of customizable, renewable lubricants.These findings contribute to the advancement of sustainable lubrication technologies, demonstrating thepotential of tailor-made oleo-dispersions as alternatives to traditional lubricants.
PB Royal Society of Chemistry
SN 2040-3364
SN 2040-3372 (electrónico)
YR 2025
FD 2025-01
LK https://hdl.handle.net/10272/25559
UL https://hdl.handle.net/10272/25559
LA eng
NO Rubio-Valle, J. F., Valencia, C., Estrada-Villegas, G. M., Martín-Alfonso, J. E., & Franco, J. M. (2025). Exploration of low-sulfonate lignin electrospinning conditions for the development of new renewable lubricant formulations. Nanoscale, 17(5), 2728–2741. Royal Society of Chemistry. https://doi.org/10.1039/d4nr04426f
NO This work is part of the Research Project PID2021-125637OB-I00, funded by MICIU/AEI/10.13039/501100011033and by ERDF/EU. J. F. Rubio-Valle additionally received a PhD Research Grant PRE2019-090632 from Spain’s Ministry ofScience and Innovation. Funding is gratefully acknowledged.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026