The effects of hydroxyapatite nano whiskers and its synergism with polyvinylpyrrolidone on poly(vinylidene fluoride) hollow fiber ultrafiltration membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (28) ◽  
pp. 21532-21543 ◽  
Author(s):  
Xuan Zhang ◽  
Wan-Zhong Lang ◽  
Hai-Peng Xu ◽  
Xi Yan ◽  
Ya-Jun Guo
Keyword(s):  
Hollow Fiber ◽  
Vinylidene Fluoride ◽  
Wet Spinning ◽  
Hollow Fiber Membranes ◽  
Ultrafiltration Membranes ◽  
Fiber Membranes ◽  
Poly Vinylidene Fluoride

By introducing hydroxyapatite (HAP) nano whiskers as well as polyvinylpyrrolidone (PVP), poly(vinylidene fluoride) (PVDF)/PVP/HAP hollow fiber membranes were fabricated with the wet spinning method.

Microporous poly(vinylidene fluoride) hollow fiber membranes fabricated with PolarClean as water-soluble green diluent and additives

2015 ◽  
Vol 479 ◽  
pp. 204-212 ◽  
Author(s):  
Naser Tavajohi Hassankiadeh ◽  
Zhaoliang Cui ◽  
Ji Hoon Kim ◽  
Dong Won Shin ◽  
Suk Young Lee ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Vinylidene Fluoride ◽  
Water Soluble ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Poly Vinylidene Fluoride

Highly effective CO2 capture using super-fine PVDF hollow fiber membranes with sub-layer large cavities

RSC Advances ◽  
2015 ◽  
Vol 5 (112) ◽  
pp. 92234-92253 ◽  
Author(s):  
Ali Ghodsi ◽  
Hossein Fashandi ◽  
Mohammad Zarrebini ◽  
Mohammad Mahdi Abolhasani ◽  
Mohsen Gorji
Keyword(s):  
Co2 Capture ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Vinylidene Fluoride ◽  
Hollow Fiber Membranes ◽  
Highly Effective ◽  
Fiber Membranes ◽  
Poly Vinylidene Fluoride ◽  
Membrane Contactors

This work reports a noticeable advancement in CO2 capture using gas–liquid membrane contactors (GLMC) composed of super-fine poly(vinylidene fluoride) hollow fiber membranes (PVDF HFMs) incorporated with sub-layer large cavities.

Preparation and Characterization of Poly (vinylidene fluoride) Hollow Fiber Membranes via Modified Thermally Induced Phase Separation Process

2013 ◽  
Vol 734-737 ◽  
pp. 2172-2175 ◽  
Author(s):  
Ai Wen Qin ◽  
Xiang Li ◽  
Bo Mou Ma ◽  
Chun Yi Liu ◽  
Xin Zhen Zhao ◽  
...  
Keyword(s):  
Phase Separation ◽  
Hollow Fiber ◽  
Vinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Pure Water ◽  
Thermally Induced Phase Separation ◽  
Hollow Fiber Membranes ◽  
Thermally Induced ◽  
Fiber Membranes ◽  
Poly Vinylidene Fluoride

Poly (vinylidene fluoride) (PVDF) hollow fiber membranes were successfully prepared using DMAc/γ-BL as the mixed diluent and PEG as the additive through modified thermally induced phase separation (M-TIPS) process. The membranes prepared were characterized by scanning electron microscope. Their properties such as water permeability and mechanical properties were also determined. The results show that PVDF membranes have spherical crystallites structure with interconnected network structure because of the combination of solidliquid and liquid-liquid phase separation. When using 25wt% aqueous ethanol solution as the coagulation, the PVDF hollow fiber membrane shows the tensile strength, i.e.4.59MPa and pure water flux, i.e.415 L/ (m2·h).

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