Polyimide based super-wettable membranes/materials for high performance oil/water mixture and emulsion separation: A review

Baig, Umair; Faizan, Muhammad; Dastageer, M.A.

doi:10.1016/j.cis.2021.102525

Cited by 93 publications

(27 citation statements)

References 105 publications

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“…Nonetheless, the main technical challenge with oleophilic membranes is the clogging of membrane pores due to the high viscosity of oil, which reduces the lifetime of the membrane and creates the problem of secondary contamination that requires post-treatment processes. 28 2.2.2 Emulsion mixtures. In emulsion systems, one phase is dispersed in a second phase in the form of small spheres.…”

Section: Classicationmentioning

confidence: 99%

Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

2022

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Section: Classicationmentioning

confidence: 99%

Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

2022

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“…In recent years, there have been many publications on polyimide materials [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. In this review, the representative progress, mainly in our laboratory, in advanced polyimide films, will be described, especially focusing on the structure and properties for electronic applications.…”

Section: Introductionmentioning

confidence: 99%

Progress in Aromatic Polyimide Films for Electronic Applications: Preparation, Structure and Properties

Yang

et al. 2022

Polymers

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Aromatic polyimides have excellent thermal stability, mechanical strength and toughness, high electric insulating properties, low dielectric constants and dissipation factors, and high radiation and wear resistance, among other properties, and can be processed into a variety of materials, including films, fibers, carbon fiber composites, engineering plastics, foams, porous membranes, coatings, etc. Aromatic polyimide materials have found widespread use in a variety of high-tech domains, including electric insulating, microelectronics and optoelectronics, aerospace and aviation industries, and so on, due to their superior combination characteristics and variable processability. In recent years, there have been many publications on aromatic polyimide materials, including several books available to readers. In this review, the representative progress in aromatic polyimide films for electronic applications, especially in our laboratory, will be described.

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“…Currently, the excessive discharge of stable oil/water emulsions poses tremendous threats to human health and ecological equilibrium, especially contaminated oil/water emulsions from domestic and industrial processes. [1][2][3] The common demulsification methods include various physical (e.g., gravitational settling, thermal treatment, 4 membrane separation, 5 electricity, 6 ultrasonic 7 ), biological (bioaugmentation, 8 biostimulation 9 ), and chemical (e.g., solidifiers, 10 demulsifiers, adsorption 11 ) processes. Among these mentioned technologies, chemical demulsification is an effective method, which has been widely used in industries for breaking emulsions.…”

Section: Introductionmentioning

confidence: 99%

Swelling poly(ionic liquid)s for demulsifying oil‐in‐water emulsion by anion exchange

Cheng

Yuan

Deng

et al. 2022

Polymers for Advanced Techs

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In this work, poly(ionic liquid)s (PILs) with swelling ability were prepared via the free radical copolymerization of N‐vinyl imidazolium ionic liquids and divinylbenzene. Nuclear magnetic resonance and Fourier‐transform infrared analyses confirmed the successful synthesis of PILs. The PILs were evaluated as demulsifiers for a model oil‐in‐water emulsion, where sodium dodecyl sulfate (SDS) was used as a surfactant. The demulsification efficiencies of PILs increased from 18%, 34%, 92% to 99% with the alkyl chain of three‐substituents on imidazolium varied from n‐octyl, n‐hex1yl, n‐butyl to n‐ethyl, which positively related with the swelling ratios of PILs in the emulsion. The amounts of dodecyl sulfate and Br− in the aqueous phase after demulsification were analyzed by high‐pressure liquid chromatography and ion chromatography, respectively. The decreased amount of dodecyl sulfate coincided with the increased amount of Br−, indicating that the anion exchange between surfactant SDS and PILs was occurred. The PILs could be recycled by ion exchange with NaBr solution and the demulsification efficiencies did not show significant decline during five times of recycling. Meanwhile, P[VEIm]Br@4 Å zeolite prepared by loading poly(1‐vinyl‐3‐ethylimidazolium bromide) on 4 Å zeolite was used for continuous demulsification in the T type device. The T type device had stable fluxes (1083 L ·m−2 h−1) for various oil‐in‐water emulsions with excellent demulsification efficiencies (above 99%).

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Polyimide based super-wettable membranes/materials for high performance oil/water mixture and emulsion separation: A review

Cited by 93 publications

References 105 publications

Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

Progress in Aromatic Polyimide Films for Electronic Applications: Preparation, Structure and Properties

Swelling poly(ionic liquid)s for demulsifying oil‐in‐water emulsion by anion exchange

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