RT Journal Article
T1 Developing Electrospun Ethylcellulose Nanofibrous Webs: An Alternative Approach for Structuring Castor Oil
A1 Borrego Algarra, María
A1 Martín Alfonso, José Enrique
A1 Valencia Barragán, Concepción
A1 Sánchez Carrillo, María Carmen
A1 Franco Gómez, José María
AB The development of environment-friendly natural polymer gel-likedispersions in oil media, with functional properties, in terms of formulation designand synthesis protocol, is still a cutting-edge research area for many applications.The aim of this work was to study the manufacture of electrospun ethylcellulose(EC) nanofibrous webs and to examine their usage to thicken vegetable oils as analternative approach. The role of concentration, molecular weight (Mw), andbinary solvent systems on the electrospinnability of EC and subsequently on therheological properties of EC nanofiber dispersions in castor oil was investigated. Itwas observed that, for each Mw, defect-free nanofibers were produced above acritical concentration, corresponding to about 2.5 the entanglement concentration (Ce). The average fiber diameter increased withboth Mw and EC concentrations. Dielectric constant and dipole moment of binary solvent systems influenced the morphology of theEC nanofiber web. The morphology of the micro- and nanoarchitectures generated played a key role in the physical stabilization andrheological behavior of electrospun EC dispersions. The storage modulus (G′) of EC dispersions was correlated with both thespinning solution concentration and average fiber diameter. Furthermore, electrospun EC nanofiber dispersions were compared withEC oleogels obtained by traditional thermogelation from thermorheological and tribological points of view. Overall, this workproposes an efficient and innovative approach to produce bio-based oleogel-like dispersions with great potential in different sectorssuch as pharmaceuticals, food, or lubricants.
PB American Chemical Society (ACS)
SN 2637-6105 (electrónico)
YR 2022
FD 2022-09
LK https://hdl.handle.net/10272/25216
UL https://hdl.handle.net/10272/25216
LA eng
NO Borrego, M., Martín-Alfonso, J. E., Valencia, C., Sánchez Carrillo, M. del C., & Franco, J. M. (2022). Developing Electrospun Ethylcellulose Nanofibrous Webs: An Alternative Approach for Structuring Castor Oil. In ACS Applied Polymer Materials (Vol. 4, Issue 10, pp. 7217–7227). American Chemical Society (ACS). https://doi.org/10.1021/acsapm.2c01090
NO This work was supported by MCIN/AEI/10.13039/501100011033, “ERDF-A way of making Europe” (grant number: RTI2018-096080-BC21), and FEDER European Programme and Junta de Andalucía/EPIT2020-UHU (grant numbers: PY20_00751 and UHU202029).
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026