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The poly(ethylene glycol)-based benzoxazine polymers were synthesized via a polycondensation reaction between Bisphenol-A, paraformaldehyde, and poly(ether diamine)/(Jeffamine®). The structures of the polymers were confirmed by proton nuclear magnetic resonance spectroscopy (1H-NMR), indicating the presence of a cyclic benzoxazine ring. The polymer solutions were casted on the glass plate and cross-linked via thermal treatment to produce tough and flexible films without using any external additives. Thermal properties and the crosslinking behaviour of these polymers were studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Single gas (H2, O2, N2, CO2, and CH4) transport properties of the crosslinked polymeric membranes were measured by the time-lag method. The crosslinked PEG-based polybenzoxazine membranes show improved selectivities for CO2/N2 and CO2/CH4 gas pairs. The good separation selectivities of these PEG-based polybenzoxazine materials suggest their utility as efficient thin film composite membranes for gas and liquid membrane separation technology.
Muntazim Munir Khan; Karabi Halder; Sergey Shishatskiy; Volkan Filiz. Synthesis and Crosslinking of Polyether-Based Main Chain Benzoxazine Polymers and Their Gas Separation Performance. Polymers 2018, 10, 221 .
AMA StyleMuntazim Munir Khan, Karabi Halder, Sergey Shishatskiy, Volkan Filiz. Synthesis and Crosslinking of Polyether-Based Main Chain Benzoxazine Polymers and Their Gas Separation Performance. Polymers. 2018; 10 (2):221.
Chicago/Turabian StyleMuntazim Munir Khan; Karabi Halder; Sergey Shishatskiy; Volkan Filiz. 2018. "Synthesis and Crosslinking of Polyether-Based Main Chain Benzoxazine Polymers and Their Gas Separation Performance." Polymers 10, no. 2: 221.
This work reports on the preparation and gas transport performance of mixed matrix membranes (MMMs) based on the polymer of intrinsic microporosity (PIM-1) and potassium dodecahydrododecaborate (K2B12H12) as inorganic particles (IPs). The effect of IP loading on the gas separation performance of these MMMs was investigated by varying the IP content (2.5, 5, 10 and 20 wt %) in a PIM-1 polymer matrix. The derived MMMs were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), single gas permeation tests and sorption measurement. The PIM1/K2B12H12 MMMs show good dispersion of the IPs (from 2.5 to 10 wt %) in the polymer matrix. The gas permeability of PIM1/K2B12H12 MMMs increases as the loading of IPs increases (up to 10 wt %) without sacrificing permselectivity. The sorption isotherm in PIM-1 and PIM1/K2B12H12 MMMs demonstrate typical dual-mode sorption behaviors for the gases CO2 and CH4.
Muntazim Munir Khan; Sergey Shishatskiy; Volkan Filiz. Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation. Membranes 2018, 8, 1 .
AMA StyleMuntazim Munir Khan, Sergey Shishatskiy, Volkan Filiz. Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation. Membranes. 2018; 8 (1):1.
Chicago/Turabian StyleMuntazim Munir Khan; Sergey Shishatskiy; Volkan Filiz. 2018. "Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation." Membranes 8, no. 1: 1.
Karabi Halder; Muntazim Munir Khan; Judith Grünauer; Sergey Shishatskiy; Clarissa Abetz; Volkan Filiz; Volker Abetz. Blend membranes of ionic liquid and polymers of intrinsic microporosity with improved gas separation characteristics. Journal of Membrane Science 2017, 539, 368 -382.
AMA StyleKarabi Halder, Muntazim Munir Khan, Judith Grünauer, Sergey Shishatskiy, Clarissa Abetz, Volkan Filiz, Volker Abetz. Blend membranes of ionic liquid and polymers of intrinsic microporosity with improved gas separation characteristics. Journal of Membrane Science. 2017; 539 ():368-382.
Chicago/Turabian StyleKarabi Halder; Muntazim Munir Khan; Judith Grünauer; Sergey Shishatskiy; Clarissa Abetz; Volkan Filiz; Volker Abetz. 2017. "Blend membranes of ionic liquid and polymers of intrinsic microporosity with improved gas separation characteristics." Journal of Membrane Science 539, no. : 368-382.
High free-volume copolymers were prepared via polycondensation with 2,3,5,6,-tetrafluoroterephthalonitrile (TFTPN) in which a portion of the 3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) of PIM-1 was replaced with dibutyl anthracene maleimide (4bIII). An investigation of free volume using positron annihilation lifetime spectroscopy (PALS), and gas permeation measurements was carried out for the thin film composite copolymer membranes and compared to PIM-1. The average free volume hole size and the gas permeance of the copolymer membranes increased with decreasing TTSBI content in the copolymer.
Muntazim Munir Khan; Volkan Filiz; Thomas Emmler; Volker Abetz; Toenjes Koschine; Klaus Rätzke; Franz Faupel; Werner Egger; Luca Ravelli. Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity. Membranes 2015, 5, 214 -227.
AMA StyleMuntazim Munir Khan, Volkan Filiz, Thomas Emmler, Volker Abetz, Toenjes Koschine, Klaus Rätzke, Franz Faupel, Werner Egger, Luca Ravelli. Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity. Membranes. 2015; 5 (2):214-227.
Chicago/Turabian StyleMuntazim Munir Khan; Volkan Filiz; Thomas Emmler; Volker Abetz; Toenjes Koschine; Klaus Rätzke; Franz Faupel; Werner Egger; Luca Ravelli. 2015. "Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity." Membranes 5, no. 2: 214-227.
Mushfequr Rahman; Sergey Shishatskiy; Clarissa Abetz; Prokopios Georgopanos; Silvio Neumann; Muntazim Munir Khan; Volkan Filiz; Volker Abetz. Influence of temperature upon properties of tailor-made PEBAX® MH 1657 nanocomposite membranes for post-combustion CO2 capture. Journal of Membrane Science 2014, 469, 344 -354.
AMA StyleMushfequr Rahman, Sergey Shishatskiy, Clarissa Abetz, Prokopios Georgopanos, Silvio Neumann, Muntazim Munir Khan, Volkan Filiz, Volker Abetz. Influence of temperature upon properties of tailor-made PEBAX® MH 1657 nanocomposite membranes for post-combustion CO2 capture. Journal of Membrane Science. 2014; 469 ():344-354.
Chicago/Turabian StyleMushfequr Rahman; Sergey Shishatskiy; Clarissa Abetz; Prokopios Georgopanos; Silvio Neumann; Muntazim Munir Khan; Volkan Filiz; Volker Abetz. 2014. "Influence of temperature upon properties of tailor-made PEBAX® MH 1657 nanocomposite membranes for post-combustion CO2 capture." Journal of Membrane Science 469, no. : 344-354.
Polymeric gas separation membranes frequently undergo the phenomenon of aging, that is, performance parameters like permeability decrease with storage or usage time. Here, we report on a new approach of reducing aging by incorporation of functionalized multiwalled carbon nanotubes into a polymer of intrinsic microporosity. Free volume and permeability measurements clearly show a reduced aging with incorporation of the carbon nantubes. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014
Toenjes Koschine; Klaus Rätzke; Franz Faupel; Muntazim Munir Khan; Thomas Emmler; Volkan Filiz; Volker Abetz; Luca Ravelli; Werner Egger. Correlation of gas permeation and free volume in new and used high free volume thin film composite membranes. Journal of Polymer Science Part B: Polymer Physics 2014, 53, 213 -217.
AMA StyleToenjes Koschine, Klaus Rätzke, Franz Faupel, Muntazim Munir Khan, Thomas Emmler, Volkan Filiz, Volker Abetz, Luca Ravelli, Werner Egger. Correlation of gas permeation and free volume in new and used high free volume thin film composite membranes. Journal of Polymer Science Part B: Polymer Physics. 2014; 53 (3):213-217.
Chicago/Turabian StyleToenjes Koschine; Klaus Rätzke; Franz Faupel; Muntazim Munir Khan; Thomas Emmler; Volkan Filiz; Volker Abetz; Luca Ravelli; Werner Egger. 2014. "Correlation of gas permeation and free volume in new and used high free volume thin film composite membranes." Journal of Polymer Science Part B: Polymer Physics 53, no. 3: 213-217.
Muntazim Munir Khan; Volkan Filiz; Gisela Bengtson; Sergey Shishatskiy; Mushfequr Rahman; Volker Abetz. Correction: Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation. Nanoscale Research Letters 2014, 9, 698 .
AMA StyleMuntazim Munir Khan, Volkan Filiz, Gisela Bengtson, Sergey Shishatskiy, Mushfequr Rahman, Volker Abetz. Correction: Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation. Nanoscale Research Letters. 2014; 9 (1):698.
Chicago/Turabian StyleMuntazim Munir Khan; Volkan Filiz; Gisela Bengtson; Sergey Shishatskiy; Mushfequr Rahman; Volker Abetz. 2014. "Correction: Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation." Nanoscale Research Letters 9, no. 1: 698.
Muntazim Munir Khan; Gisela Bengtson; Sergey Shishatskiy; Bahadir Gacal; Mushfequr Rahman; Silvio Neumann; Volkan Filiz; Volker Abetz. Cross-linking of Polymer of Intrinsic Microporosity (PIM-1) via nitrene reaction and its effect on gas transport property. European Polymer Journal 2013, 49, 4157 -4166.
AMA StyleMuntazim Munir Khan, Gisela Bengtson, Sergey Shishatskiy, Bahadir Gacal, Mushfequr Rahman, Silvio Neumann, Volkan Filiz, Volker Abetz. Cross-linking of Polymer of Intrinsic Microporosity (PIM-1) via nitrene reaction and its effect on gas transport property. European Polymer Journal. 2013; 49 (12):4157-4166.
Chicago/Turabian StyleMuntazim Munir Khan; Gisela Bengtson; Sergey Shishatskiy; Bahadir Gacal; Mushfequr Rahman; Silvio Neumann; Volkan Filiz; Volker Abetz. 2013. "Cross-linking of Polymer of Intrinsic Microporosity (PIM-1) via nitrene reaction and its effect on gas transport property." European Polymer Journal 49, no. 12: 4157-4166.
The present work reports on the gas transport behavior of mixed matrix membranes (MMM) which were prepared from multi-walled carbon nanotubes (MWCNTs) and dispersed within polymers of intrinsic microporosity (PIM-1) matrix. The MWCNTs were chemically functionalized with poly(ethylene glycol) (PEG) for a better dispersion in the polymer matrix. MMM-incorporating functionalized MWCNTs (f-MWCNTs) were fabricated by dip-coating method using microporous polyacrylonitrile membrane as a support and were characterized for gas separation performance. Gas permeation measurements show that MMM incorporated with pristine or functionalized MWCNTs exhibited improved gas separation performance compared to pure PIM-1. The f-MWCNTs MMM show better performance in terms of permeance and selectivity in comparison to pristine MWCNTs. The gas permeances of the derived MMM are increased to approximately 50% without sacrificing the selectivity at 2 wt.% of f-MWCNTs' loading. The PEG groups on the MWCNTs have strong interaction with CO2 which increases the solubility of polar gas and limit the solubility of nonpolar gas, which is advantageous for CO2/N2 selectivity. The addition of f-MWCNTs inside the polymer matrix also improved the long-term gas transport stability of MMM in comparison with PIM-1. The high permeance, selectivity, and long term stability of the fabricated MMM suggest that the reported approach can be utilized in practical gas separation technology.
Muntazim M Khan; Volkan Filiz; Gisela Bengtson; Sergey Shishatskiy; Mushfequr Rahman; Volker Abetz. Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation. Nanoscale Research Letters 2012, 7, 504 -504.
AMA StyleMuntazim M Khan, Volkan Filiz, Gisela Bengtson, Sergey Shishatskiy, Mushfequr Rahman, Volker Abetz. Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation. Nanoscale Research Letters. 2012; 7 (1):504-504.
Chicago/Turabian StyleMuntazim M Khan; Volkan Filiz; Gisela Bengtson; Sergey Shishatskiy; Mushfequr Rahman; Volker Abetz. 2012. "Functionalized carbon nanotubes mixed matrix membranes of polymers of intrinsic microporosity for gas separation." Nanoscale Research Letters 7, no. 1: 504-504.