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- W2354407645 abstract "To prepare environmentally resporsive(ER) copolymers which are suitable for fabrication of ER polysulfone(PSF) membranes,we designed and synthesized the PSF copolymers with poly(acrylic acid)(PAA) and poly(N-isopropylacrylamide(PNIPAAm) side chains,i.e.PSF-g-PAA and PSF-g-PNIPAAm,respectively.These two comb-like copolymers were synthesized via ATRP by using a chloromethylated polysulfone as macroinitiator.The molar fraction of PAA and PNIPAAm in the resultant copolymers estimated from~1H-NMR is 0.538 and 0.896,respectively.In using as additives for PSF membranes prepared by the phase inversion process,the comb-like copolymers segregate to the membrane surfaces,delivering improved porosity,average pore diameters,hydrophilicity,and ER properties compared to pure PSF membranes.For instance,20 wt% PSF-g-PAA/PSF and 20 wt% PSF-g-PNIPAAm/PSF blend membranes can be completely wet by water within 35 s and 90 s,respectively.The flux of the aqueous solution through the 20 wt% PSF-g-PAA/PSF membrane decreases with increasing the solution pH valuse from 1 to 6.The water permeation rate through the 20 wt% PSF-g-PNIPAAm/PSF membrane increases with increasing water temperature from 25℃ to 60℃." @default.
- W2354407645 created "2016-06-24" @default.
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- W2354407645 date "2009-01-01" @default.
- W2354407645 modified "2023-09-24" @default.
- W2354407645 title "SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES" @default.
- W2354407645 hasPublicationYear "2009" @default.
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