RT Journal Article
T1 Electrospinnability of PCL-doped eucalyptus kraft lignin and its application for structuring vegetable oils
A1 Rubio Valle, José Fernando
A1 Valencia Barragán, Concepción
A1 Ferrano, Giovanni
A1 Sánchez Carrillo, María Carmen
A1 Martín Alfonso, José Enrique
A1 Franco Gómez, José María
K1 Materials Science
K1 Polymer Science
K1 Chemical Engineering
AB This study explores the utilization of eucalyptus kraft lignin (EKL), extracted from black liquor of the pulp and paper industry, doped with polycaprolactone (PCL) to produce nanofibers with potential applications as vegetable oil structuring agents. Solutions of EKL:PCL in different weight ratios were prepared in a N,N-dimethylformamide/ chloroform binary solvent, at concentrations ranging from 10 to 40 wt%, and submitted to electrospinning. Electrospinnability essentially correlates with the shear and extensional rheological properties of the solutions. Resulting electrospun EKL/PCL nanofibers were subsequently dispersed in castor oil at different concentrations (15 and 30 wt%). Stable gel-like dispersions were obtained with electrospun nanostructures predominantly composed of nanofibers or beaded fibers. The rheological properties and microstructure of EKL/ PCL nanofiber-based oleo-dispersions were significantly influenced by both the EKL:PCL weight ratio and electrospun nanofiber concentration, with increases in the linear viscoelasticity functions and viscosity correlating with higher nanofiber concentrations and PCL proportions. These findings point out the potential of EKL/PCL nanofibers as eco-friendly vegetable oil structuring agents, in line with the principles of circular economy through the reuse of renewable waste materials.
PB Elsevier
SN 0167-7322
SN 1873-3166 (electrónico)
YR 2024
FD 2024-10
LK https://hdl.handle.net/10272/25146
UL https://hdl.handle.net/10272/25146
LA eng
NO Rubio-Valle, J. F., Valencia, C., Ferraro, G., Carmen Sánchez, M., Martín-Alfonso, J. E., & Franco, J. M. (2024). Electrospinnability of PCL-doped eucalyptus kraft lignin and its application for structuring vegetable oils. In Journal of Molecular Liquids (Vol. 414, p. 126248). Elsevier BV. https://doi.org/10.1016/j.molliq.2024.126248
NO PID2021-125637OB-I00, funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of  making Europe”Grant PRE2019-090632 from Spain’s Ministry of Science and InnovationOpen Access funding provided by Universidad de Huelva / CBUA, thanks to the CRUE-CSIC
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026