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- W2049051966 startingPage "109" @default.
- W2049051966 abstract "Surface modification by low-pressure ammonia (<TEX>$NH_3$</TEX>) plasma on commercial thin-film composite (TFC) membranes was investigated in this study. Surface hydrophilicity, total surface free energy, ion exchange capacity (IEC) and zeta (<TEX>${zeta}$</TEX>)-potentials were determined for the TFC membranes. Qualitative and quantitative analyses of the membrane surface chemistry were conducted by attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy. Results showed that the <TEX>$NH_3$</TEX> plasma treatment increased the surface hydrophilicity, in particular at a plasma treatment time longer than 5 min at 50 W of plasma power. Total surface free energy was influenced by the basic polar components introduced by the <TEX>$NH_3$</TEX> plasma, and isoelectric point (IEP) was shifted to higher pH region after the modification. A ten (10) min <TEX>$NH_3$</TEX> plasma treatment at 90 W was found to be adequate for the TFC membrane modification, resulting in a membrane with better characteristics than the TFC membranes without the modification for water treatment. The thin-film chemistry (i.e., fully-aromatic and semi-aromatic nature in the interfacial polymerization) influenced the initial stage of plasma modification." @default.
- W2049051966 created "2016-06-24" @default.
- W2049051966 creator A5001009962 @default.
- W2049051966 creator A5016974970 @default.
- W2049051966 date "2013-04-25" @default.
- W2049051966 modified "2023-09-27" @default.
- W2049051966 title "Effect of NH<sub>3</sub>plasma on thin-film composite membrane: Relationship of membrane and plasma properties" @default.
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- W2049051966 doi "https://doi.org/10.12989/mwt.2013.4.2.109" @default.
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