TY - JOUR
T1 - Exploring the effect of iron metal-organic framework particles in polylactic acid membranes for the azeotropic separation of organic/organic mixtures by pervaporation
AU - Msahel, Asma
AU - Galiano, Francesco
AU - Pilloni, Martina
AU - Russo, Francesca
AU - Hafiane, Amor
AU - Castro-Muñoz, Roberto
AU - Kumar, Vijay Bhooshan
AU - Gedanken, Aharon
AU - Ennas, Guido
AU - Porat, Ze’ev
AU - Scano, Alessandra
AU - Ben Hamouda, Sofiane
AU - Figoli, Alberto
N1 - Publisher Copyright:
© 2021 by the authors.
PY - 2021/1/18
Y1 - 2021/1/18
N2 - A microporous carboxylate metal-organic framework MIL-100 Fe was prepared as submicron particles by microwave-assisted hydrothermal synthesis (Fe-MOF-MW). This product was explored, for the first time, for the preparation of polylactic acid (PLA) mixed matrix membranes. The produced MOF was characterised by powder X-ray diffraction (PXRD), environmental scanning electron microscopy (ESEM) as well as by thermogravimetric analysis (TGA) and nitrogen adsorption/desorption. The effect of different Fe-MOF-MW concentrations (0.1 and 0.5 wt%) on the membrane properties and performance were evaluated. These membranes were used in the pervaporation process for the separation of methanol/methyl tert-butyl-ether mixtures at the azeotropic point. The influence of the feed temperature and vacuum pressure on the membrane performance was evaluated and the results were compared with PLA pristine membranes. Moreover, the produced membranes have been characterised in terms of morphology, MOF dispersion in the polymeric membrane matrix, wettability, thickness, mechanical resistance and swelling propensity. The presence of Fe-MOF-MW was found to have a beneficial effect in improving the selectivity of mixed matrix membranes towards methanol at both concentrations. The highest selectivity was obtained for the PLA membranes embedded with 0.5 wt% of Fe-MOF-MW and tested at the temperature of 25 °C and vacuum pressure of 0.09 mbar.
AB - A microporous carboxylate metal-organic framework MIL-100 Fe was prepared as submicron particles by microwave-assisted hydrothermal synthesis (Fe-MOF-MW). This product was explored, for the first time, for the preparation of polylactic acid (PLA) mixed matrix membranes. The produced MOF was characterised by powder X-ray diffraction (PXRD), environmental scanning electron microscopy (ESEM) as well as by thermogravimetric analysis (TGA) and nitrogen adsorption/desorption. The effect of different Fe-MOF-MW concentrations (0.1 and 0.5 wt%) on the membrane properties and performance were evaluated. These membranes were used in the pervaporation process for the separation of methanol/methyl tert-butyl-ether mixtures at the azeotropic point. The influence of the feed temperature and vacuum pressure on the membrane performance was evaluated and the results were compared with PLA pristine membranes. Moreover, the produced membranes have been characterised in terms of morphology, MOF dispersion in the polymeric membrane matrix, wettability, thickness, mechanical resistance and swelling propensity. The presence of Fe-MOF-MW was found to have a beneficial effect in improving the selectivity of mixed matrix membranes towards methanol at both concentrations. The highest selectivity was obtained for the PLA membranes embedded with 0.5 wt% of Fe-MOF-MW and tested at the temperature of 25 °C and vacuum pressure of 0.09 mbar.
KW - Iron metal organic-framework
KW - MOF
KW - Methanol
KW - Methyl tert-butyl ether (MTBE)
KW - Organic-organic separation
KW - Pervaporation
KW - Polylactic acid (PLA)
UR - http://www.scopus.com/inward/record.url?scp=85100331840&partnerID=8YFLogxK
U2 - 10.3390/membranes11010065
DO - 10.3390/membranes11010065
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C2 - 33477556
AN - SCOPUS:85100331840
SN - 2077-0375
VL - 11
SP - 1
EP - 18
JO - Membranes
JF - Membranes
IS - 1
M1 - 65
ER -