Incorporation effect of fluorinated side groups into polyimide membranes on their pervaporation properties

Kim, Jeong-Hoon; Chang, Bong‐Jun; Lee, Soo-Bok; Kim, Sang Youl

doi:10.1016/s0376-7388(99)00346-4

Cited by 54 publications

(18 citation statements)

References 17 publications

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“…Therefore, thermal stability of the membrane material decides the membrane performance and the economy of the operation under high temperatures. For such applications, fluorinated polymers are good candidates due to their high hydrophobicity and chemical stability [61].…”

Section: Polymermentioning

confidence: 99%

Hollow fiber gas–liquid membrane contactors for acid gas capture: A review

Mansourizadeh

Ismail

2009

Journal of Hazardous Materials

338

161

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Section: Polymermentioning

confidence: 99%

Hollow fiber gas–liquid membrane contactors for acid gas capture: A review

Mansourizadeh

Ismail

2009

Journal of Hazardous Materials

338

161

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“…Under high temperatures, the membrane material may not be able to resist to degradation or decomposition. Moreover, its hydrophobicity can be significantly improved by being fluorinated [60].This type of membrane can be considered to be used in the gas absorption applications. Over these temperatures, the properties of the polymers change dramatically.…”

Section: Membrane Propertiesmentioning

confidence: 99%

“…But most of them exhibit low hydrophobicity which can be significantly improved by being fluorinated [60].This type of membranes can be considered to be used in the gas absorption applications. In order to increase long-term stability of membranes, selection of materials with high chemical and thermal stability that can carry out membrane gas absorption is important.…”

Section: Future Directions In Acid Gas Removal Through Hollow Fiber Gmentioning

confidence: 99%

Removal of Acid Gas Emissions Using Hollow Fiber Gas Absorption Membrane Contactors

Mansourizadeh¹,

Ismail²

2008

International Petroleum Technology Conference

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TX 75083-3836, U.S.A., fax +1-972-952-9435. AbstractIt is important to devise techniques which would remove acid gases like CO2, H2S and other sulphoric components present in natural gas and industrial gas. They may have to be removed from the gas streams for environmental, economical and operational reasons. This paper provides a general review of hollow fiber gas absorption membrane contactor, including liquid absorbents, membrane characteristics, combination of membrane and absorbent, mass transfer, modules and model development. And also, areas of future potential in gas absorption membrane contactors for acid gas removal were briefly identified. In this device, separation of a gas mixture is achieved by the liquid absorbent, which selectively absorbs one of the components of the permeating gas mixture. The microporous membrane used in this process act as a fixed interface between the gas and the liquid phase without dispersing one phase into another that offers a flexible modular and energy efficient device. The absorption process can offer a high selectivity and a high driving force for transport even at low concentrations. Therefore, using hollow fiber gas absorption membrane contactors for acid gas removal from gas streams can be a promising alternative to conventional gas absorption systems.

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“…Moreover, the chemical structure and the pervaporation performance of polyimide membranes could be manipulated and optimized by the selection of suitable monomers (dianhydrides and diamines). For instance, aromatic 6FDA-based polyimides not only are easily soluble in common solvents but also possess reasonable pervaporation performance as well as good mechanical properties due to the bulky fluorine groups [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%