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- W2995156777 abstract "ABSTRACT In this study, a commercial polyimide is examined in the capacity of membrane oxygenator. The effects of polymer concentration, cosolvent, and nonsolvent additives in dope solution on the performance and morphology of membranes are investigated. In order to improve the performance, surface modification is carried out by using plasma‐enhanced chemical vapor deposition. The obtained results reveal that CO 2 permeance decreased from 495 to 78 GPU upon increasing Matrimid concentration at constant tetrahydrofuran (THF) and ethanol (EtOH) concentrations. It was also found that increasing nonsolvent concentration as well as decreasing cosolvent concentration in dope led to increase in membrane gas permeance. According to morphological characterizations, increase in polymer concentration resulted in transformation of membranes from porous into spongy like microstructure with formation of a denser skin layer. In addition, membrane porosity and mean pore size reduced by increasing THF and decreasing EtOH concentrations. On the other hand, plasma treatment successfully introduced fluorine groups onto the membrane surface which promoted biocompatibility of the membranes. Energy‐dispersive X‐ray spectroscopy results revealed that fluorination of membrane surface was attained up to 23% and contact angle of membrane enhanced up to 120°. Membrane permeance was also increased slightly upon modification. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48824." @default.
- W2995156777 created "2019-12-26" @default.
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- W2995156777 date "2019-12-20" @default.
- W2995156777 modified "2023-09-30" @default.
- W2995156777 title "Development and tuning of Matrimid membrane oxygenators with improved biocompatibility and gas permeance by plasma treatment" @default.
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- W2995156777 doi "https://doi.org/10.1002/app.48824" @default.
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