Tailoring Morphology of PVDF-HFP Membrane via One-step
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) receives increasing attention in membrane separation field based on its advantages such as high mechanical strength, thermal and chemical stability. However, controlling the microporous structure is still challenging. In this work, we attempted to tailor the morphology of PVDF-HFP membrane via a one-step reactive vapor induced phase
What is the best way to remove plasticizer from PVDF-HFP
The best way to remove plasticizer from OVDF-HFP based membrane is by solvent extraction: alcohol extraction solvent that is selected from the group consisting of ethanol, propanol,...
Phase behavior of binary and ternary fluoropolymer (PVDF-HFP
SPEs were prepared by dissolving LPF: PVDF-HFP (=1: 1 to 1: 5 by wt ratio) in acetone and cast it in a Teflon plate (see Scheme 1 for chemical structure of LPF). Then the cell with stainless steel (SUS)/SPE/SUS or Li/SPE/Li configuration was assembled and vacuum-sealed using a blue bag from Shield Pack, Inc. in a glove box under argon environment.
Gel polymer electrolyte based on PVDF-HFP:PMMA incorporated
A weighed amount of LiClO 4 salt was then dissolved in a different amount of plasticizers PC:DEC which are also taken in the equal ratio (1:1). This electrolyte solution (plasticizers + salt) was then mixed into the polymer blend solution. This mixture was stirred for 8 to 10 hours using a magnetic stirrer to gets a homogeneous solution.
Dielectric studies and AC conductivity of PVDF-HFP: LiBF4
Plasticized polymer-salt electrolytes composed of various concentrations of EC plasticizer in (PVDF – HFP: LiBF 4) polymer – salt electrolyte was prepared by using solution cast method. The dielectric constant and dielectric loss was found to decrease with increase of frequency.
- How to remove plasticizer from ovdf-HFP based membrane?
- The best way to remove plasticizer from OVDF-HFP based membrane is by solvent extraction: alcohol extraction solvent that is selected from the group consisting of ethanol, propanol, butanol, and pentanol, and mixtures thereof. solvent extraction using a Soxhlet extractor setup is the most used way. Membrane dialysis may also be used. Regards
- Do Plasticizers improve ionic conductivity of PVDF-HFP-based polymer electrolytes?
- Recently, many reports have been made on the improvement of ionic conductivity of the PVDF-HFP-based polymer electrolytes with plasticizers; for example, Ulaganathan et al. studied the surface morphologies and conductivity of PVDF-HFP/PEMA electrolytes prepared with different wt% of Li-salts and plasticizer, propylene carbonate (PC).
- Does TEGDME plasticizer increase amorphous nature of PVDF-HFP polymer matrix?
- The XRD results confirmed that the new TEGDME plasticizer increased the amorphous nature of the PVDF-HFP polymer matrix. The FTIR results show the new CH 2 -CH 2 bond in the composite solid electrolytes confirmed the bond between the PVDF-HFP and TEGDME. The XPS results confirmed the Li-ion migration in the polymer matrix by Li-F bond in the CSEs.
- What is the dielectric constant of poly(vinylidene fluoride-hexafluoropropylene)?
- Compared with other polymer electrolytes, poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) has a high dielectric constant (ε = 8.4), which facilitates a high concentration of charge carriers. It also has both an amorphous (-HFP) and a crystalline phase (-VDF) , .
- What are the advantages of PVDF-HFP?
- But among them PVDF-HFP is a promising material that has porous nature to absorb more ionic salt, semi crystalline nature, high dielectric constant, low glass transition temperature, no leakage, good electrode–electrolyte contact, miniature in size and good ionic conductivity , , , , , .
- Is EC plasticizer a good compatible ratio of polymer salt electrolytes?
- The effect of various concentrations of EC plasticizer in a good compatible ratio of (80:20) (PVDF-HFP: LiBF 4) polymer salt electrolytes are studied. 2. Experimental
