RT info:eu-repo/semantics/article
T1 Enhancing permeability: unraveling the potential of microporous organic polymers in mixed matrix membranes
A1 Torres Arribas, Alba
A1 Soto Guzmán, Marvelia Cenit
A1 Carmona Del Rio, Francisco Javier
A1 Simorte, María Teresa
A1 Sanz, Inmaculada
A1 Muñoz Torre, Raúl
A1 Palacio Martínez, Laura
A1 Prádanos del Pico, Pedro Lourdes
A1 Hernández Giménez, Antonio
A1 Tena Matias, Alberto
K1 Gas separation
K1 Mixed matrix membranes
K1 Permeability
K1 Selectivity
K1 Modeling of dual-phase permeability
K1 F-factor
K1 22 Física
AB Mixed matrix membranes (MMMs) were formed by using seven polymeric matrices with a wide range of permeabilities. All of the polymeric matrices have been polyimides, namely: P84, Pi-DAPOH, Pi-DAROH, Matrimid, Pi-HABAc, PI-DAM, and PIM-1 in the order of increasing O2 permeability. A fixed (10%) concentration of a microporous organic polymer (TFAP-Trp), formed by the combination of trifluoroacetophenone and triptycene, was added as a porous filler. The material properties as well as their separation performances for multiple pure gases, specifically the permeabilities of He, N2, O2, CH4, and CO2, were measured. The correlation between the relative increase in permeability in MMMs and that of the matrix polymeric membrane has been quantitatively analyzed. This study proves that the increased permeability of MMMs is largely linked to the contribution of the high permeability of the filler. The addition of the TFAP-Trp porous filler proves to be especially beneficial for matrices with low to moderate permeabilities, significantly enhancing the matrix permeability overall. The fitted relationship is approximately linear in accordance with the existing models to predict permeability in dual-phase systems for low proportions of the dispersed phase. An extrapolation allows the evaluation of the permeability of the pure microporous organic polymer, which agrees with the previous values described by the group for different filler contents and in other polymeric matrices. In all cases, the selectivity remains approximately constant while the permeability increases. The addition of TFAP-Trp to all the polymeric matrices led to a moderate improvement of the MMM separation performances, mainly centered on their permeabilities.
PB ACS (American Chemical Society)
SN 2637-6105
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/75067
UL https://uvadoc.uva.es/handle/10324/75067
LA eng
NO ACS Applied Polymer Materials, 2024, vol. 6, n. 15, p. 9088-9098
NO Producción Científica
DS UVaDOC
RD 22-feb-2025