@article{10272/20439,
year = {2021},
month = {6},
url = {http://hdl.handle.net/10272/20439},
abstract = {This work explores the electrospinnability of low-sulfonate Kraft lignin (LSL)/polyvinylpyrrolidone (PVP) solutions
in N,N-dimethylformamide (DMF) and the ability of the different micro- and nano-architectures generated
to 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 nanostructures
mainly depends on the rheological properties of the solution. Electrosprayed nanoparticles or
micro-sized particles connected by thin filamentswere obtained fromsolutionswith lowLSL/PVP concentrations
and/or high LSL:PVP ratios,whereas beaded or bead-free nanofibers were produced by increasing concentration
and/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 oil
at concentrations between 10 and 30 wt%. The rheological properties of the oleogels may be tailored bymodifying
the LSL:PVP ratio and nanofibers content. The potential application of these oleogels as bio-based lubricants
was also explored in a tribological cell. Satisfactory friction and wear results are achieved when using oleogels
structured 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},
organization = {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},
title = {Electrospun lignin-PVP nanofibers and their ability for structuring oil},
doi = {10.1016/j.ijbiomac.2021.03.069},
author = {Borrego Algarra, María and Martín Alfonso, José Enrique and Sánchez Carrillo, María Carmen and Valencia Barragán, Concepción and Franco Gómez, José María},
}