High-performance composite membranes incorporated with carboxylic acid nanogels for CO2 separation

Li, Xueqin; Jiang, Zhongyi; Wu, Yingzhen; Zhang, Haiyang; Cheng, Youdong; Guo, Ruili; Wu, Hong

doi:10.1016/j.memsci.2015.07.065

Cited by 65 publications

(28 citation statements)

References 52 publications

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“…The CO 2 permeability gradually increased with increasing operating temperature, whereas the CO 2 –CH 4 separation factor decreased with increasing operating temperature. The trend of the pristine Pebax membrane with increasing temperature was consistent with other literature results . The increasing operating temperature enhanced the mobility of the polymer chains; thus, the membrane structure became loose, and this reduced the diffusion resistance for the permeation of gas molecules.…”

Section: Resultssupporting

confidence: 90%

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Liu

Qin

Guo

et al. 2016

J of Applied Polymer Sci

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Novel facilitated-transport mixed-matrix membrane (MMM) were prepared through the incorporation of polydopamine (PDA) microspheres into a poly(amide-b-ethylene oxide) (Pebax MH 1657) matrix to separate CO 2 -CH 4 gas mixtures. The Pebax-PDA microsphere MMMs were characterized by Fourier transform infrared spectroscopy, scanning electron microcopy, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. The PDA microspheres acted as an adhesive filler and generated strong interfacial interactions with the polymer matrix; this generated a polymer chain rigidification region near the polymer-filler interface. Polymer chain rigidification usually results in a larger resistance to the transport of gas with a larger molecular diameter and a higher CO 2 -CH 4 selectivity. In addition, the surface of PDA microspheres contained larger numbers of amine, imine, and catechol groups; these were beneficial to the improvement of the CO 2 separation performance. Compared with the pristine Pebax membrane, the MMM with a 5 wt % PDA microsphere loading displayed a higher gas permeability and selectivity; their CO 2 permeability and CO 2 -CH 4 selectivity were increased by 61 and 60%, respectively, and surpassed the 2008 Robeson upper bound line. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44564.

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Section: Resultssupporting

confidence: 90%

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Liu

Qin

Guo

et al. 2016

J of Applied Polymer Sci

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“…Moreover, by increasing the operating pressure, CO 2 fills the space between the chains of the polymer network. This increases the gap between these bonds, which consequently increases the mobility of the polymeric chain [ 45 ], causes the plasticity of the membranes, and also increases the membrane permeability [ 46 , 47 , 48 ]. All of these facts can be translated to the higher permeability of CO 2 with the operating pressure.…”

Section: Resultsmentioning

confidence: 99%

Effects of ZnO Nanoparticle on the Gas Separation Performance of Polyurethane Mixed Matrix Membrane

Soltani

Asghari

2017

Membranes

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Polyurethane (PU)-ZnO mixed matrix membranes (MMM) were fabricated and characterized for gas separation. A thermogravimetric analysis (TGA), a scanning electron microscope (SEM) test and an atomic-force microscopy (AFM) revealed that the physical properties and thermal stability of the membranes were improved through filler loading. Hydrogen Bonding Index, obtained from the Fourier transform infrared spectroscopy (FTIR), demonstrate that the degree of phase separation in PU-ZnO 0.5 wt % MMM was more than the neat PU, while in PU-ZnO 1.0 wt % MMM, the phase mixing had increased. Compared to the neat membrane, the CO2 permeability of the MMMs increased by 31% for PU-ZnO 0.5 wt % MMM and decreased by 34% for 1.0 wt % ZnO MMM. The CO2/CH4 and CO2/N2 selectivities of PU-ZnO 0.5 wt % were 18.75 and 64.75, respectively.

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“…Mixed‐gas (CO 2 /CH 4 =10/90 vol% and CO 2 /N 2 =10/90 vol%) permeation experiments of all membranes were conducted under humidified condition by using a constant pressure/variable volume method. The mixed‐gas permeation apparatus was the same as that in previous work . In the mixed‐gas permeation experiment (tested condition: 25°C and 2 bar), a circular membrane was put in a constant pressure permeation cell.…”

Section: Methodsmentioning

confidence: 99%

Improving CO₂ separation performance by incorporating MWCNTs@mSiO₂ core@shell filler in mixed matrix membranes

Hou

Guo

et al. 2017

Polymer Composites

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To improve CO 2 separation performance in mixed matrix membranes (MMMs), a novel mesoporous silica-coated on the outer surface of multi-walled carbon nanotube (MWCNTs@mSiO 2 ) core@shell filler was synthesized and dispersed into Pebax MH 1657 (TPE) matrix. The introduced mSiO 2 layer on the outer surface of MWCNTs have a favorable effect on the dispersion and compatibility of MWCNTs@mSiO 2 core@shell filler in TPE matrix. Most importantly, the pore channels of mesoporous silica and MWCNTs constructed the feasible gas transport pathways for CO 2 permeation in MMMs. The MMMs presented the best CO 2 separation performance when the content of MWCNTs@mSiO 2 in TPE matrix was 10 wt%. The CO 2 permeability and CO 2 /CH 4 selectivity of TPE-MWCNTs@mSiO 2 -10 membrane were 379 Barrer and 39 for CO 2 /CH 4 mixed-gas, respectively. The CO 2 permeability and CO 2 /N 2 selectivity of TPE-MWCNTs@mSiO 2 -10 membrane were 364 Barrer and 58 for CO 2 /N 2 mixedgas, respectively. POLYM. COMPOS., 00:000-000,

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High-performance composite membranes incorporated with carboxylic acid nanogels for CO2 separation

Cited by 65 publications

References 52 publications

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Effects of ZnO Nanoparticle on the Gas Separation Performance of Polyurethane Mixed Matrix Membrane

Improving CO₂ separation performance by incorporating MWCNTs@mSiO₂ core@shell filler in mixed matrix membranes

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High-performance composite membranes incorporated with carboxylic acid nanogels for CO2 separation

Cited by 65 publications

References 52 publications

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO2 separation

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO2 separation

Effects of ZnO Nanoparticle on the Gas Separation Performance of Polyurethane Mixed Matrix Membrane

Improving CO2 separation performance by incorporating MWCNTs@mSiO2 core@shell filler in mixed matrix membranes

Contact Info

Product

Resources

About

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Pebax–polydopamine microsphere mixed‐matrix membranes for efficient CO₂ separation

Improving CO₂ separation performance by incorporating MWCNTs@mSiO₂ core@shell filler in mixed matrix membranes