Plasticization-resistant glassy polyimide membranes for CO2/CO4 separations

Bos, A.N.R.; Punt, Ineke G.M.; Weßling, Matthias; Strathmann, H.

doi:10.1016/s1383-5866(98)00057-4

Cited by 288 publications

(216 citation statements)

References 29 publications

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“…However, many polyimides have similar limitations in their practical use as cellulose acetate because of CO 2 -induced plasticization, which often results in unacceptable loss in CO 2 /CH 4 selectivity [16][17][18][19]. However, recent studies demonstrated that plasticization in polyimides can be mitigated to a large extend by various methods, such as: (i) Thermal annealing [20][21][22][23], (ii) chemical cross-linking [22,[24][25][26][27][28][29][30] and (iii) formation of charge transfer complexes [31].…”

Section: Introductionmentioning

confidence: 99%

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

Alaslai

Ghanem

Alghunaimi

et al. 2016

Journal of Membrane Science

117

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The effect of hydroxyl functionalization on the m-phenylene diamine moiety of 6FDA dianhydride-based polyimides was investigated for gas separation applications. Pure-gas permeability coefficients of He, H 2 , N 2 , O 2 , CH 4 , and CO 2 were measured at 35 °C and 2 atm.The introduction of hydroxyl groups in the diamine moiety of 6FDA-diaminophenol (DAP) and 6FDA-diamino resorcinol (DAR) polyimides tightened the overall polymer structure due to increased charge transfer complex formation compared to unfunctionalized 6FDA-m-phenylene diamine (mPDA). The BET surface areas based on nitrogen adsorption of 6FDA-DAP (54 m 2 g -1 )and of 6FDA-DAR (45 m 2 g -1 ) were ~18% and 32% lower than that of 6FDA-mPDA (66 m 2 g -1 ).6FDA-mPDA had a pure-gas CO 2 permeability of 14 Barrer and CO 2 /CH 4 selectivity of 70. The hydroxyl-functionalized polyimides 6FDA-DAP and 6FDA-DAR exhibited very high pure-gas CO 2 /CH 4 selectivities of 92 and 94 with moderate CO 2 permeability of 11 and 8 Barrer, respectively. It was demonstrated that hydroxyl-containing polyimide membranes maintained very high CO 2 /CH 4 selectivity (~ 75 at CO 2 partial pressure of 10 atm) due to CO 2 plasticization resistance when tested under high-pressure mixed-gas conditions. Functionalization with hydroxyl groups may thus be a promising strategy towards attaining highly selective polyimides for economical membrane-based natural gas sweetening.

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Section: Introductionmentioning

confidence: 99%

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

Alaslai

Ghanem

Alghunaimi

et al. 2016

Journal of Membrane Science

117

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“…Considering this opportunity, blends of S-PEEK with Matrimid were made. Matrimid was chosen because it is a commonly available commercial polymer studied for gas separation, possesses good mechanical properties and is thermally stable [8,[12][13][14]. The effect of chemical cross-linking and different operating conditions on the performance of blend membranes was studied and compared with the individual polymers.…”

Section: Introductionmentioning

confidence: 99%

SPEEK/Matrimid blend membranes for CO2 separation

Khan

Vankelecom

2011

Journal of Membrane Science

117

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“…In particular, tests were performed after 48, 1 000, 2 000 and 3 000 hours from deposition, to evaluate the combined effects of thermal treatment and physical aging on the transport properties of the polymer. Three different temperatures have been investigated (35,45, 55°C) and the upstream pressure for all the experiments was approximately 2 bar, far below the CO 2 plasticization pressure for Matrimid [41]. Schematic of the permeation apparatus used for tests.…”

Section: Methodsmentioning

confidence: 99%

“…The mass transport properties of Matrimid polyimide have been widely investigated [20,28,29,42,43] showing interesting values both of permeability and selectivity, which make it potentially suitable for CO 2 /CH 4 separation even if its tendency to plasticize in the presence of CO 2 [41] could inhibit its use in high pressure applications.…”

Section: Introductionmentioning

confidence: 99%

Effects of Thermal Treatment and Physical Aging on the Gas Transport Properties in Matrimid^®

Ansaloni

Minelli

Baschetti

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Carbon dioxide and methane transport in a commercial polyimide, Matrimid 5218 Ò , has been characterized in order to evaluate the effect of membrane thermal treatment and physical aging on its potentialities for CO 2 /CH 4 separation. In particular, CO 2 and CH 4 permeabilities and diffusion coefficients were measured at three different temperatures (35, 45 and 55°C) in films pretreated at 50, 100, 150 and 200°C, respectively. The performances of each sample were examined for a period of more than 3 000 hours. Permeability and diffusivity values for both penetrants showed a marked decrease with increasing the pretreatment temperature up to 150°C and remained, then, substantially unchanged for specimens pretreated at the highest temperature. Interestingly, the samples characterized by the higher flux after film formation also showed a faster aging phenomenon, leading to a 25% decrease of CO 2 permeability in the period inspected. Conversely, the samples pretreated at temperatures of 150°C, or higher, displayed very stable transport properties for the entire duration of the monitoring campaign. At the end of the aging period considered, the differences among samples were definitely reduced, suggesting that the initial behaviors are related to different polymer structures induced by pretreatment, which slowly evolve in time towards more similar and more stable configurations. Such aging rearrangements affect both CO 2 and CH 4 permeability in a similar way, so that no significant changes were observed for selectivity, which showed only a slight increment by increasing the temperature of the thermal treatment or the duration of the aging period. 150°C ont affiche´des proprie´te´s de transport tre`s stables pendant toute la dure´e des mesures. Par conse´quent, a`la fin de l'e´tude, les diffe´rences entre les e´chantillons ont e´te´nettement re´duites, ce qui sugge`re que la structure initiale pourrait eˆtre due a`des structures polyme´riques diffe´rentes, induites par un pre´traitement, qui e´voluent lentement avec le temps vers des configurations plus semblables et plus stables. Il est important de remarquer qu'un tel re´arrangement a affected e la meˆme manie`re la perme´abilite´au CO 2 et celle au CH 4 . Nous n'observons donc pas de changements significatifs en ce qui concerne la se´lectivite´qui a montre´seulement une le´ge`re hausse lorsque l'on augmente la tempe´rature du traitement thermique ou le temps de vieillissement.

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Plasticization-resistant glassy polyimide membranes for CO2/CO4 separations

Cited by 288 publications

References 29 publications

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

SPEEK/Matrimid blend membranes for CO2 separation

Effects of Thermal Treatment and Physical Aging on the Gas Transport Properties in Matrimid^®

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Plasticization-resistant glassy polyimide membranes for CO2/CO4 separations

Cited by 288 publications

References 29 publications

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

SPEEK/Matrimid blend membranes for CO2 separation

Effects of Thermal Treatment and Physical Aging on the Gas Transport Properties in Matrimid®

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Product

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Effects of Thermal Treatment and Physical Aging on the Gas Transport Properties in Matrimid^®