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- W2955412281 abstract "A facile route for the in situ surface modification and mechanical strength-enhancement of electrospun nanofibers is described. Blends of a host hydrophilic polymer, polysulfone (PSF), and small quantities of a fluorinated polyurethane additive (FPA) up to 6 wt% in the PSF blend were considered. During electrospinning, this additive undergoes spontaneous surface segregation resulting in nanofibers with an improved hydrophobic character attributed mainly to the detected fluorine-rich surface and enhanced mechanical properties. We report the effects of the fluorinated additive content in the blend on the morphological and structural characteristics of the electrospun nanofibrous mats (ENMs) including their inter-fiber space and void volume fraction. ENMs with a superhydrophobic surface could be prepared using at least 3 wt% FPA in the PSF blend. The ENMs were tested in desalination by membrane distillation (MD) and competitive permeate fluxes as high as 53.8 kg/m2h, with stable low permeate electrical conductivities (<5.1 μS/cm), were achieved for the ENM prepared with 4.5 wt% FPA in the PSF blend, when the feed was 30 g/L NaCl aqueous solution and the transmembrane temperature difference was 60 °C, without any inter-fiber space wetting being detected." @default.
- W2955412281 created "2019-07-12" @default.
- W2955412281 creator A5015847698 @default.
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- W2955412281 date "2019-10-01" @default.
- W2955412281 modified "2023-10-05" @default.
- W2955412281 title "Superhydrophobic nanofibers electrospun by surface segregating fluorinated amphiphilic additive for membrane distillation" @default.
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- W2955412281 doi "https://doi.org/10.1016/j.memsci.2019.117215" @default.
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