2026-07-02T02:26:21Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/74172023-03-28T09:27:21Zcom_10259_3592com_10259_3591com_10259.4_106com_10259_2604com_10259_3843com_10259_4313com_10259_5086col_10259_3930col_10259_6162col_10259_4314
Repositorio Institucional de la Universidad de Burgos
author
Rubio Aguinaga, Andrea
author
Reglero Ruiz, José A.
author
Muñoz Santamaría, María Asunción
author
García García, Félix Clemente
author
García Calvo, José
author
Trigo López, Miriam
2023-02-07T13:34:52Z
2023-02-07T13:34:52Z
2022-10
0021-8995
http://hdl.handle.net/10259/7417
10.1002/app.53192
1097-4628
Low-density porous aramid films using inexpensive and widely available polymers as porosity promoters, that is, polyvinyl alcohol (PVA), poly(2-ethyl-2-oxazoline) (PEOx), and cellulose polyacetate (CA) were fabricated. Porous poly (m-phenylene isophthalamide) films were obtained by the standard casting procedure using mixtures of the aramid with either PVA, PEOx, or CA, followed by the removal of the porosity promoter polymers by immersing them in water or acetone. As a result, films with up to a 65% density reduction with pore sizes ranging from 0.02 to 10 μm and up to 30% increment in Young's modulus were obtained. In addition, the morphology of the films was homogeneous and was controlled by the proportion and nature of the porosity promoter polymer. The density reduction of materials plays a significant role in energy crises and the need for fuel reduction. This study revealed that it is possible to prepare low-density porous aramid films inexpensively without impairing their outstanding performance by using PVA in the casting procedure as a porosity promoter polymer.
eng
Atribución 4.0 Internacional
Films
Mechanical propert
Porous materials
Preparation of low‐density high‐performance porous aramid films using porosity promoter polymers
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/7417/1/Rubio-japs_2022.pdf
File
MD5
e36e7627f624bc69e40324b254c3f265
2566141
application/pdf
Rubio-japs_2022.pdf