scholarly journals Fabrication of a PVDF membrane with tailored morphology and properties via exploring and computing its ternary phase diagram for wastewater treatment and gas separation applications

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40373-40383
Author(s):  
S. Ashtiani ◽  
M. Khoshnamvand ◽  
P. Číhal ◽  
M. Dendisová ◽  
A. Randová ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Wastewater Treatment ◽  
Phase Separation ◽  
Ternary Phase ◽  
Vinylidene Fluoride ◽  
Ternary Phase Diagram ◽  
Simple Approach ◽  
Hydrophobic Properties ◽  
Pvdf Membrane ◽  
Poly Vinylidene Fluoride

We report a simple approach for tailoring the morphology of poly(vinylidene fluoride) (PVDF) membranes fabricated using a nonsolvent induced phase separation (NIPS) method that sustains both the hydrophilic and hydrophobic properties.

scholarly journals Effects of solvent sort on casting solution and morphology of poly(ether sulfones) filtration membrane

2020 ◽  
Author(s):  
Kai Fan ◽  
Chun Liu ◽  
Haijun Yang ◽  
Zhengchi Hou
Keyword(s):  
Phase Diagram ◽  
Phase Separation ◽  
Shear Viscosity ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Viscosity Measurement ◽  
Micro Structure ◽  
Filtration Membranes ◽  
Filtration Membrane ◽  
Thermodynamics And Dynamics

Abstract Four kinds of solvent were chosen to prepare poly(ether sulfones) (PES) filtration membranes by the nonsolvent induced phase separation (NIPS) method. Ternary phase diagram and shear viscosity measurement were conducted to analyse the formation of prepared membrane from thermodynamic and kinetic perspectives. The micro-structure of the membranes with different solvents were analysed, and the result showed a high relevance to the thermodynamics and dynamics of the casting solutions, and promoted the proposal of a reasonable membrane formation mechanism.

Design and Synthesis of a Superhydrophobic PVDF-Based Composite

2015 ◽  
Vol 138 (2) ◽  
Author(s):  
Hyunho Choi ◽  
Kyungjun Lee ◽  
John Reeks ◽  
Hong Liang
Keyword(s):  
Phase Separation ◽  
Chemical Treatment ◽  
Vinylidene Fluoride ◽  
Cost Effective ◽  
Simple Approach ◽  
Material Surface ◽  
Engineering Applications ◽  
Design And Synthesis ◽  
Material Surfaces ◽  
Poly Vinylidene Fluoride

The ability to design, control, and synthesize a material surface with superhydrophobicity is of great interests in many engineering applications. Here, we report a cost-effective process to fabricate poly(vinylidene fluoride) (PVDF)/zirconium(IV) oxide (ZrO2) composites with superhydrophobicity. This is achieved by combining an antisolvent that induces phase separation, i.e., the precipitation of PVDF from the solution through a spray-on method on various liquids. The material surfaces possess wrinkled micron-sized beads which displayed superhydrophobicity in water without any chemical treatment. The process developed in this research presented a fast and simple approach in making hydrophobic surfaces.

Origins of phase separation in thermoelectric (Ti, Zr, Hf)NiSn half-Heusler alloys from first principles

2016 ◽  
Vol 4 (36) ◽  
pp. 13949-13956 ◽  
Author(s):  
Alexander Page ◽  
Anton Van der Ven ◽  
P. F. P. Poudeu ◽  
Ctirad Uher
Keyword(s):  
Phase Diagram ◽  
Phase Separation ◽  
First Principles ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Heusler Alloys ◽  
First Principles Calculations ◽  
Composition Space

First principles calculations were used to create a pseudo-ternary phase diagram of the (Hf1−x−yZryTix)NiSn composition space.

Transformations in undercooled molten Pd40.5Ni40.5P19

1998 ◽  
Vol 13 (11) ◽  
pp. 3034-3042 ◽  
Author(s):  
C. W. Yuen ◽  
H. W. Kui
Keyword(s):  
Phase Diagram ◽  
Phase Separation ◽  
Ternary Phase ◽  
Ternary Phase Diagram ◽  
Nucleation And Growth ◽  
Glass Forming Ability ◽  
Metallic Alloys ◽  
Transition Regime ◽  
Glass Forming ◽  
Kinetic Crystallization

It was demonstrated that liquid phase separation by nucleation and growth (LNG) occurs in undercooled molten Pd40.5Ni40.5P19 for undercoolings ΔT ≤ 60 K (ΔT = Tl − T where Tl is the liquidus and T is the kinetic crystallization temperature), and liquid state spinodal decomposition (LSD) occurs for ΔT ≥ 100. For 60 ≤ ΔT ≤ 100 K, it is the transition regime from LNG to LSD. A ternary phase diagram is introduced to summarize the reactions occurred in undercooled molten Pd40.5Ni40.5P19. Finally, it is suggested that LSD has an important impact on glass-forming ability of metallic alloys.

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