Correlated Effect of Air Gap and PVP Concentration on the Structure and Performance of PVDF Ultrafiltration Hollow Fiber Membrane
نویسنده
چکیده
• The air gap effect on PVDF hollow fiber membranes is much more evident for the dope solution with the high PVP concentration than low PVP concentration. • Large macro-voids/cavities in PVDF hollow fiber membranes are suppressed to the finger-like macro-voids and the separation layer is thickened when increasing PVP concentration in dope solution. • The hydrophilicity and viscosity of polymer solution strongly affect the morphologies and mechanical properties of PVDF hollow fiber membranes. Journal of Membrane Science and Research 3 (2017) 78-83
منابع مشابه
Correlated Effect of Air Gap and PVP Concentration on the Structure and Performance of PVDF Ultrafiltration Hollow Fiber Membrane
Polyvinylidene fluoride/polyvinylpyrrolidone (PVDF/PVP) hollow fiber membranes were fabricated by dry-jet wet-spinning process. The correlated effects of the air gap length and PVP concentration ((1) the air gap length effect at the low and high PVP concentration in the dope solutions, as well as (2) the effect of the PVP concentration at the same air gap length) on the cross-section structure ...
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