RT Journal Article
T1 Electrospun lignin-PVP nanofibers and their ability for structuring oil
A1 Borrego Algarra, María
A1 Martín Alfonso, José Enrique
A1 Sánchez Carrillo, María Carmen
A1 Valencia Barragán, Concepción
A1 Franco Gómez, José María
AB This work explores the electrospinnability of low-sulfonate Kraft lignin (LSL)/polyvinylpyrrolidone (PVP) solutionsin N,N-dimethylformamide (DMF) and the ability of the different micro- and nano-architectures generatedto structure castor oil. LSL/PVP solutionswere prepared at different concentrations (8–15wt%) and LSL:PVP ratios(90:10–0:100) and physico-chemically and rheologically characterized. The morphology of electrospun nanostructuresmainly depends on the rheological properties of the solution. Electrosprayed nanoparticles ormicro-sized particles connected by thin filamentswere obtained fromsolutionswith lowLSL/PVP concentrationsand/or high LSL:PVP ratios,whereas beaded or bead-free nanofibers were produced by increasing concentrationand/or decreasing LSL:PVP ratio, due to enhanced extensional viscoelastic properties and non-Newtonian characteristics.Electrospun LSL/PVP nanofibers are able to form oleogels by simply dispersing them into castor oilat concentrations between 10 and 30 wt%. The rheological properties of the oleogels may be tailored bymodifyingthe LSL:PVP ratio and nanofibers content. The potential application of these oleogels as bio-based lubricantswas also explored in a tribological cell. Satisfactory friction and wear results are achieved when using oleogelsstructured by nanofibers mats with enhanced gel-like properties as lubricants. Overall, electrospinning of lignin/PVP solutions can be proposed as a simple and effective method to produce nanofibers for oil structuring
SN 0141-8130
YR 2021
FD 2021-06-01
LK http://hdl.handle.net/10272/20439
UL http://hdl.handle.net/10272/20439
LA eng
NO Borrego, M., MartínAlfonso, J.E.,  Carmen Sánchez, M., Valencia, C., Franco, J.M.: Electrospun lignin-PVP nanofibers and their ability for structuring oil,International Journal of Biological Macromolecules, Volume 180,2021, Pages 212-221,ISSN 0141-8130, https://doi.org/10.1016/j.ijbiomac.2021.03.069.
NO Funding for open access charge: Universidad de Huelva / CBUAThis work is part of a research project (RTI2018-096080-B-C21) sponsored by the MICINN-FEDER I+D+i Spanish Programme
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026