Characterization and performance of plate-like Ba0.6Sr0.4TiO3/Poly(vinylidene fluoride – trifluoroethylene -chlorotrifluoroethylene) composites with high permittivity and low loss

Polymer ◽  
2020 ◽  
Vol 203 ◽  
pp. 122777
Author(s):  
Yiting Guo ◽  
Nan Meng ◽  
Yiming Zhang ◽  
Jie Xu ◽  
Emilia Pawlikowska ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Low Loss ◽  
High Permittivity ◽  
Poly Vinylidene Fluoride ◽  
And Performance

Preparation and characterization of anti-fouling PVDF membrane modified by chitin

2017 ◽  
Vol 37 (3) ◽  
pp. 313-321 ◽  
Author(s):  
Manman Xie ◽  
Xia Feng ◽  
Juncheng Hu ◽  
Zhengyi Liu ◽  
Zijian Wang ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Membrane Surface ◽  
Solvent System ◽  
Pvdf Membrane ◽  
Blend Membrane ◽  
Poly Vinylidene Fluoride ◽  
And Performance ◽  
Membrane Structure And Performance ◽  
Precipitation Phase

Abstract Poly(vinylidene fluoride) (PVDF)/chitin (CH) blend membranes were prepared via the method of immersion-precipitation phase transformation with the solvent system N,N-dimethylacetamide (DMAc)/lithium chloride (LiCl) as solvent and water as coagulant. The effect of CH on membrane structure and performance was investigated. Owing to the strong hydrophilicity, CH chains enriched on the blend membrane surface and improved the hydrophilicity of the membrane. The addition of CH also led to the formation of finger-like pores and the increase of pore size and porosity. The flux and the flux recovery ratio (FRR) of the blend membrane were higher than that of pure PVDF membrane. The fouling resistance of the blend membrane was lower than that of PVDF original membrane. In a word, the addition of CH to PVDF membrane improved the hydrophilicity and the anti-fouling ability of PVDF membrane.

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