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PVDF hollow fiber membranes with a unique sandwich structure and superior wetting resistance have been designed for vacuum membrane distillation (VMD) of seawater desalination in this study. The sandwich structure consists of two sponge-like inner and outer porous layers and a thin middle layer full of small-size macrovoids. The sponge-like structure in the two porous layers is specially designed...
Membranes with high hydrophobicity are essential for membrane distillation of seawater desalination. A facile surface modification method has been developed to obtain hydrophobic PVDF membranes by depositing fluorographite particles on the membrane surface. The surface hydrophobicity increases with an increase in the number of fluorographite particles on the membrane surface. After the fluorographite...
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