Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector

In order to enhance CO2 capture by MMMs, UiO?66?NH2 nanoparticles were modified by KH560, and KH560?UiO?66?NH2 nanoparticles were synthesized by ring?opening reaction between the epoxide group in KH560 and the ?NH2 in UiO?66?NH2. The resulting KH560?UiO?66?NH2 was used as a filler to prepare KH560?UiO?66?NH2/Pebax MMMs.KH560?UiO?66?NH2 facilitated CO2 transport in MMMs prepared.AbstractMetal–organic frame UiO?66?NH2 was modified by 3?glycidyl ether oxypropyl trimethoxysilane (KH560), and KH560?UiO?66?NH2 was synthetized and added to Pebax to prepare KH560?UiO?66?NH2/Pebax mixed matrix membranes (MMMs). The epoxy group of KH560 had an amine?epoxidation reaction with the ?NH2 in UiO?66?NH2, which prevented UiO?66?NH2 from agglutinating in the MMMs. In addition, the N?H bond and ?OH bond of KH560?UiO?66?NH2 could theoretically form hydrogen bonds with C?O and N?H bonds in the main chain of polymerization, respectively, so as to improve the interfacial compatibility between fillers and polymers. The structure and properties of the filler particles and MMMs were evaluated by Fourier transform infrared spectrometer, x?ray diffraction, scanning electron microscopy, and thermogravimetric analyzer. The results showed that the filler particles were successfully synthesized, and had good crystallinity, uniform size distribution, and good thermal stability. The inorganic and organic interfaces of MMMs had no obvious interface defects. The obtained KH560?UiO?66?NH2/Pebax MMMs showed CO2 permeability of 111.52 Barre and CO2/N2 selectivity of 92.16, which were 85.65% and 88.73% higher than that of pristine membranes, respectively. The gas separation performance of MMMs was significantly improved, exceeding the upper bound of 2008 Robeson.

» Publication Date: 24/07/2024

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