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• W4306406475 startingPage "139818" @default.
• W4306406475 abstract "• Graphene oxide (GO) was modified via epoxy ring opening-reaction. • Polyethylene glycol (PEG) was grafted on GO by free-radical polymerization. • PEG-grafted on GO provides a highly CO 2 -philic pathway. • PEG-grafted GO constructs an ultra-thin selective layer on porous support. • A remarkable CO 2 separation performance was achieved (P CO2 = 3169 GPU, α CO2/N2 = 37.4) The introduction of two-dimensional (2D) nanofillers into thin-film (<1 μm thickness) mixed-matrix membranes (MMMs) remains challenging because of the interfacial issues that lead to Knudsen diffusion, thereby causing a loss of selectivity. Herein, we describe a surface modification technique that involves the application of an epoxy group ring opening process and free-radical polymerization to the graphene oxide (GO) surface to enable the grafting of CO 2 -philic poly(ethylene glycol) (PEG) chains. The use of functional groups to achieve the PEG modification of GO increases the interlayer spacing between the 2D GO layers. Specifically, the abundant PEG domain between the layers provides an effective CO 2 -philic pathway and minimizes the occurrence of polymer matrix-GO filler interfacial defects, resulting in excellent CO 2 permeance and selectivity. The MMM consisting of GO-glycidyl methacrylate grafted with poly(oxyethylene methacrylate) achieved the highest performance, with a CO 2 permeance of 3169 GPU, CO 2 /N 2 selectivity of 37.4, and CO 2 /CH 4 selectivity of 15.8. These results indicate the suitability of the as-prepared materials for commercial applications." @default.
• W4306406475 created "2022-10-17" @default.
• W4306406475 creator A5051381039 @default.
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• W4306406475 date "2023-02-01" @default.
• W4306406475 modified "2023-10-17" @default.
• W4306406475 title "Engineering CO2-philic pathway via grafting poly(ethylene glycol) on graphene oxide for mixed matrix membranes with high CO2 permeance" @default.
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• W4306406475 doi "https://doi.org/10.1016/j.cej.2022.139818" @default.
• W4306406475 hasPublicationYear "2023" @default.
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