RT info:eu-repo/semantics/article
T1 Porous aromatic polyamides the easy and green way
A1 Pascual Portal, Blanca Sol
A1 Trigo López, Miriam
A1 Reglero Ruiz, José Antonio
A1 Pablos, Jesús Luis
A1 Bertolín Burillo, Juan Carlos
A1 Represa Pérez, César
A1 Cuevas Vicario, José Vicente
A1 García García, Félix Clemente
A1 García Pérez, José Miguel
K1 Ionic liquid
K1 Aramid
K1 Porous film
K1 Thermally-induced phase separation
K1 Ingeniería química
K1 Chemical engineering
AB 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.
PB Elsevier
SN 0014-3057
YR 2019
FD 2019-07
LK http://hdl.handle.net/10259/5093
UL http://hdl.handle.net/10259/5093
LA eng
NO 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)
DS Repositorio Institucional de la Universidad de Burgos
RD 21-nov-2024