Gas permeability and free volume in poly(amide-b-ethylene oxide)/polyethylene glycol blend membranes

Yave, Wilfredo; Car, Anja; Peinemann, Klaus‐Viktor; Shaikh, M.Q.; Rätzke, Klaus; Faupel, Franz

doi:10.1016/j.memsci.2009.04.049

Cited by 129 publications

(90 citation statements)

References 36 publications

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“…Similar conclusions were drawn by Yave et al using poly(amide-b-ethylene oxide)/polyethylene glycol blend membranes [101]. Interestingly, Chen et al obtained improved CO 2 /H 2 mixed selectivities in comparison with the ones measured in pure gas tests using various PEO based membranes.…”

Section: 2supporting

confidence: 79%

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Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Bakonyi

Nemestóthy

Bélafi–Bakó

2013

International Journal of Hydrogen Energy

145

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Membrane Separation Polymer Ionic liquidIntegrated system a b s t r a c t Many types of membranes are available to enrich hydrogen. Nevertheless, there are some with special potential for biohydrogen purification such as the non-porous, polymeric and ionic liquid based membranes. The attractiveness of these membranes comes from the fact that they can be employed nearly under the conditions where biohydrogen formation taking place. Therefore, they appear as promising candidates to be coupled with hydrogen producing bioreactors and hence giving the chance for in situ biohydrogen concentration.It is known that the feasibility and efficiency of membrane technology e beside material selection and module design e significantly depend on the separation circumstances.Thus, the operation of membranes is a key issue and the most important factors to be considered for gas purification are the composition of gas to be separated, the pressure and temperature applied. The scope of this study is to give a comprehensive overview on the recent applications of non-porous, polymeric and ionic liquid supported membranes for biohydrogen recovery, placing emphasis on the operational conditions affecting membrane's behavior and performance. Furthermore, a novel concept for integrated biohydrogen production and purification using gas separation membranes is demonstrated and discussed.

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Section: 2supporting

confidence: 79%

“…Thermal treatment Kawakami et al [46] Chemical cross linking Choi et al [21] Lin et al [59] Tin et al [94] Polymer blending Car et al [16] Khan et al [48] Reijerkerk et al [80,81] Yave et al [101] i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( 2 0 1 3 ) 1 e1 …”

Section: Strategy Referencementioning

confidence: 99%

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Bakonyi

Nemestóthy

Bélafi–Bakó

2013

International Journal of Hydrogen Energy

145

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“…The glass-transition temperature demonstrates a monotonically decrease from −46.3 to −60.1 °C with increase of PEG loadings, attributed to the incorporation of low-molecular-weight PEG. [ 17,21 ] A high intermolecular space system formed since incorporated PEG molecules can be located between polymer chains, resulting in the increase of total free volume of polymer, especially the dynamic free volume, which is reliable for gas diffusion. [ 13,14 ] Moreover, the enrichment of chain end-groups with the increase of PEG loading can enhance chain motions, leading to the decrease of T g .…”

Section: Methodsmentioning

confidence: 99%

“…However, carbon dioxide (CO 2 ) is an inevitable impurity generated during the production of H 2 via stream methane reforming (SMR) followed by a process approach to restrain the PEO crystallization, thus, to improve the gas separation properties. [13][14][15][16][17] For example, Car and Peinemann blended Pebax MH 1657 with poly (ethylene glycol) (PEG) (molecular weight = 200 g mol −1 ) for CO 2 separation. The resultant membrane with 50 wt% PEG indicated an obvious increase in CO 2 permeability from 72 Barrer to 151 Barrer.…”

Section: Introductionmentioning

confidence: 99%

PEG‐Imbedded PEO Membrane Developed by a Novel Highly Efficient Strategy Toward Superior Gas Transport Performance

Quan

Tang

Wang

et al. 2015

Macromol. Rapid Commun.

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Low-molecular-weight poly(ethylene glycol) (PEG) is deliberately incorporated into synthesized swellable poly(ethylene oxide) (PEO) membranes via a facile post-treatment strategy. The membranes exhibit both larger fractional free volume (FFV) and a higher content of CO2-philic building units, resulting in significant increments in both CO2 permeability and CO2/H2 selectivity. The separation performance correlates nicely with the microstructure of the membranes. This study may provide useful insights in the formation and mass transport behavior of highly efficient polymeric membranes applicable to clean energy purification and CO2 capture, and possibly bridge the material-induced technology gap between academia and industry.

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“…CO 2 has a small molecular size and high critical temperature in comparison to the other gases ( Table 2). It is noteworthy that CO 2 also is a polar gas that can interact with polar chain polymers [1,31,32]. Hence, the higher CO 2 permeability is related to the higher solubility of CO 2 in the membranes compared to O 2 , CH 4 , and N 2 , that was mainly attributed to the presence of the polar ether oxygen in PTMG and PDMS components of the PU/PA12-b-PTMG blend membrane and favorable interactions between the polyol components of blend and CO 2 .…”

Section: Effect Of Pu/ Pa12-b-ptmg Blend Composition On Gas Permeatiomentioning

confidence: 99%

Characterization and Gas Permeation Properties of Synthesized Polyurethane-Polydimethylsiloxane / Polyamide 12-b-Polytetramethylene Glycol Blend Membranes

Vakili

Semsarzadeh

Ghalei

et al. 2015

Silicon

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Blend membranes of synthesized polyurethane (PU) based on toluene diisocyanate (TDI), polydimethylsiloxane (PDMS) and polytetramethylene glycol (PTMG) with polyamide 12-b-polytetramethylene glycol (PA12-b-PTMG) were prepared by a solution casting technique. The heterogeneous microstructures of the blend membranes (PU /PA12-b-PTMG) were characterized by Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Gas transport properties were determined for O 2 , N 2 , CH 4 , and CO 2 gases and the obtained permeabilities were correlated with polymer properties and morphology of the membranes. Comparison of the results with that of the pure PU membrane indicates that the blend membranes had higher permeability to CO 2 , but lower permeability to O 2 , N 2 and CH 4 gases, and, therefore, had higher values of CO 2 /N 2 and CO 2 /CH 4 ideal gas pair selectivities. The blend membrane with 20 % (wt) PA12-b-PTMG showed the highest CO 2 permeability (≈105 Barrer) compared to the PU and other blend membranes. In the blend membranes with 5-20 % (wt) PA12-b-PTMG contents an enhancement of CO 2 /CH 4 (≈ 10) and CO 2 /N 2 (≈ 52) selectivities was observed. The experimental permeabilities of the blend membranes were compared with the calculated permeabilities based on a modified additive logarithmic model.

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Gas permeability and free volume in poly(amide-b-ethylene oxide)/polyethylene glycol blend membranes

Cited by 129 publications

References 36 publications

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

PEG‐Imbedded PEO Membrane Developed by a Novel Highly Efficient Strategy Toward Superior Gas Transport Performance

Characterization and Gas Permeation Properties of Synthesized Polyurethane-Polydimethylsiloxane / Polyamide 12-b-Polytetramethylene Glycol Blend Membranes

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