RT info:eu-repo/semantics/article
T1 Enhancement of CO2/CH4 permselectivity via thermal rearrangement of mixed matrix membranes made from an o-hydroxy polyamide with an optimal load of a porous polymer network
A1 Soto Guzmán, Marvelia Cenit
A1 Aguilar Lugo, Carla
A1 Rodríguez, Sara
A1 Palacio Martínez, Laura
A1 Lozano, Ángel E.
A1 Prádanos del Pico, Pedro Lourdes
A1 Hernández Giménez, Antonio
K1 Mixed matrix membranes
K1 Membranas de matriz mixta
K1 Thermal rearrangement
K1 Reordenamiento térmico
K1 Polymer porous networks
K1 Redes poliméricas porosas
AB Mixed matrix membranes, MMMs, consisting of variable loads of a porous polymer network, PPN, within an o-hydroxipolyamide, HPA (6FCl-APAF, made from the reaction between 2,2-bis[4-chlorocarbonylphenyl)hexafluoropropane, 6FCl, and 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane, APAF), have been thermally treated to induce the rearrangement of HPA to a polybenzoxazole (β-TR-PBO). HPA is 6FCl-APAF was loaded with a PPN synthetized, by us, by combining triptycene (TRP) and trifluoroacetophenone (TFAP). Mechanical, thermal and morphological properties of the membranes have been determined.CO2/CH4 selectivity of MMMs decreased slightly both when the PPN load was augmented and when thermal rearrangement took place. The changes in selectivity can be attributed mostly to solubility effects for β-TR-MMMs and to diffusive effects for the MMM from neat HPA. CO2 and CH4 permeabilities increased to the 2008 Robesońs upper bond for an optimal 30% PPN load both before and after thermal rearrangement. These relatively good permselectivities are explained in terms of compaction, rigidity, fractional free volumes and filling-matrix interactions.
PB Elsevier
SN 1383-5866
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/48934
UL https://uvadoc.uva.es/handle/10324/48934
LA eng
NO Separation and Purification Technology, 2020, vol. 247, 116895
NO Producción Científica
DS UVaDOC
RD 23-nov-2024