2026-06-10T08:49:39Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/53442022-08-11T22:42:07Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

Trigo López, Miriam Vallejos Calzada, Saúl Reglero Ruiz, José A. García Gómez, Alejandra Seara Martínez, María García García, Félix Clemente García Pérez, José Miguel 2020-06-16T13:27:15Z 2020-06-16T13:27:15Z 2020-08 0032-3861 http://hdl.handle.net/10259/5344 10.1016/j.polymer.2020.122629 We prepare low density nanoporous aramid films reinforced with carbon-based nanocharges (graphene, carbon nanofibers and carbon nanotubes), using ionic liquids to generate and control the porous structure, reaching a density reduction of about 4 times and pore sizes down to 240 nm. Because of the low dispersion ability of the nanocharges in the aramid matrix, we carried out a novel functionalization process in which nanocharges were chemically modified by anchoring a polyamide model to their surface. Then, we tested the different behavior of the aramid films reinforced with neat and functionalized nanocharges, observing that functionalization led to better nanocharges dispersion, reduction of pore size from the micrometer to the nanometer range and the improvement of the mechanical behavior, resulting in higher relative Young's moduli values (around 60% higher in porous aramids reinforced with functionalized nanocharges). FEDER (Fondo Europeo de Desarrollo Regional) and both the Spanish Agencia Estatal de Investigación (MAT2017–84501-R) and the Consejería de Educación-Junta de Castilla y León (BU306P18) application/pdf eng Elsevier Polymer. 2020, V. 202, 122629 https://doi.org/10.1016/j.polymer.2020.122629 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Nanoporous aramid Carbon nanocharge Ionic liquid Chemistry Química High-performance nanoporous aramid films reinforced with functionalized carbon nanocharges using ionic liquids info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Polymer 202 122629