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Título : Porous aromatic polyamides the easy and green way
Autor : Pascual Portal, Blanca Sol
Trigo López, Miriam
Reglero Ruiz, José A.
Pablos, Jesús Luis
Bertolín Burillo, Juan Carlos
Represa Pérez, César
Cuevas Vicario, José Vicente
García García, Félix Clemente
García Pérez, José Miguel
Publicado en: European Polymer Journal. 2019, V. 116, p. 91-98
Editorial : Elsevier
Fecha de publicación : jul-2019
Fecha de disponibilidad: ago-2021
ISSN : 0014-3057
DOI: 10.1016/j.eurpolymj.2019.03.058
Resumen : We prepared microporous aramid films through a simple, inexpensive and green way, using ionic liquids (IL) as porosity promoters. Commercial poly(m-phenylene isophthalamide) (MPIA) films with different IL proportions were prepared, and then microporous films were obtained by removing the IL in distilled water. Microporous films presented density values between 0.34 and 0.71 g⋅cm−3 (around five times lower to commercial MPIA), with a homogeneous and controlled cellular morphology dependent on the proportion of the IL, showing cell sizes in the microcellular range (radii between 1 and 8 µm). Thermal, mechanical and electrical properties (specifically ionic conductivity) of the aramid films were analyzed to evaluate the influence of the IL proportion. Finally, it was observed that the MPIA/IL system presented a reversible thermally induced phase-separation process around 60 °C, which was characterized through AFM-Raman images and spectra, together with the variation of the ionic conductivity.
Palabras clave: Ionic liquid
Aramid
Porous film
Thermally-induced phase separation
Materia: Ingeniería química
Chemical engineering
Licencia: https://creativecommons.org/licenses/by-nc-nd/4.0/
URI : http://hdl.handle.net/10259/5093
Versión del editor: https://doi.org/10.1016/j.eurpolymj.2019.03.058
Aparece en las colecciones: Artículos POLYMERS

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