RT info:eu-repo/semantics/article
T1 Preparation of low‐density high‐performance porous aramid films using porosity promoter polymers
A1 Rubio Aguinaga, Andrea
A1 Reglero Ruiz, José Antonio
A1 Muñoz Santamaría, María Asunción
A1 García García, Félix Clemente
A1 García Calvo, José
A1 Trigo López, Miriam
K1 Films
K1 Mechanical propert
K1 Porous materials
K1 Química
K1 Chemistry
AB 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.
PB Wiley
SN 0021-8995
YR 2022
FD 2022-10
LK http://hdl.handle.net/10259/7417
UL http://hdl.handle.net/10259/7417
LA eng
NO Regional Government of Castilla y León (Junta de Castilla y León), the Ministry of Science and Innovation MICIN and the European Union NextGenerationEU / PRTR, and the Spanish Agencia Estatal de Investigación (State Research Agency), Grant/Award Number: PID2019-108583RJ-I00/AEI/10.13039/501100011033
DS Repositorio Institucional de la Universidad de Burgos
RD 11-dic-2024