Influence of hydrophilic/hydrophobic protic ionic liquids (PILs) on the poly(vinylidene fluoride) (PVDF-ionic liquid) membrane properties

Poly(vinylidene fluoride) (PVDF) is a versatile thermoplastic fluoropolymer with intriguing characteristics, which is receiving considerable attention from researchers in many areas. Recently, PVDF and its copolymer, such as poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) have been blended with ionic liquids to produce blend and composite materials for target applications. In this succinct review, two types of ionic liquids that are utilized for the preparation of PVDF and PVDF-HFP blends and composites, namely, hydrophilic and hydrophobic imidazolium-based ionic liquids, are reviewed. In addition, the effect of the ionic liquids on the physicochemical properties of the PVDF and PVDF-HFP blends and composites, is described as well. On top of that, a multitude of applications of the blends and composites are also succinctly reviewed. This review may give inspirations to the polymer blend and composite researchers in diversifying the applications of thermoplastic fluoropolymers through the utilization of ionic liquids.

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Crystallization Monitoring of Semicrystalline Poly(vinylidene fluoride)/1-Ethyl-3-methylimidazolium Hexafluorophosphate [Emim][PF6] Ionic Liquid Blends

Crystal Growth & Design ◽

10.1021/acs.cgd.1c00333 ◽

2021 ◽

Author(s):

Daniela M. Correia ◽

Carlos M. Costa ◽

José C. Rodríguez Hernández ◽

Isabel Tort-Ausina ◽

Laura Teruel Biosca ◽

...

Keyword(s):

Ionic Liquid ◽

Vinylidene Fluoride ◽

Poly Vinylidene Fluoride ◽

Crystallization Monitoring

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Crystal Forms and Microphase Structures of Poly(vinylidene fluoride-co-hexafluoropropylene) Physically and Chemically Incorporated with Ionic Liquids

Macromolecules ◽

10.1021/acs.macromol.8b02087 ◽

2018 ◽

Vol 52 (1) ◽

pp. 385-394 ◽

Cited By ~ 5

Author(s):

Jipeng Guan ◽

Jieqing Shen ◽

Xingru Chen ◽

Hengti Wang ◽

Qin Chen ◽

...

Keyword(s):

Ionic Liquids ◽

Vinylidene Fluoride ◽

Crystal Forms ◽

Poly Vinylidene Fluoride

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Impact of Ionic Liquid-Modified Multiwalled Carbon Nanotubes on the Crystallization Behavior of Poly(vinylidene fluoride)

The Journal of Physical Chemistry B ◽

10.1021/jp304166t ◽

2012 ◽

Vol 116 (28) ◽

pp. 8312-8320 ◽

Cited By ~ 121

Author(s):

Chenyang Xing ◽

Liping Zhao ◽

Jichun You ◽

Wenyong Dong ◽

Xiaojun Cao ◽

...

Keyword(s):

Carbon Nanotubes ◽

Ionic Liquid ◽

Multiwalled Carbon Nanotubes ◽

Crystallization Behavior ◽

Vinylidene Fluoride ◽

Multiwalled Carbon ◽

Poly Vinylidene Fluoride

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Effects of Ionic Liquid Nanoconfinement on the CO2/CH4 Separation in Poly(vinylidene fluoride)/1-Ethyl-3-methylimidazolium Thiocyanate Membranes

ACS Applied Materials & Interfaces ◽

10.1021/acsami.1c13169 ◽

2021 ◽

Vol 13 (37) ◽

pp. 44460-44469

Author(s):

Farzin Rahmani ◽

Paul Scovazzo ◽

Melissa A. Pasquinelli ◽

Sasan Nouranian

Keyword(s):

Ionic Liquid ◽

Vinylidene Fluoride ◽

Poly Vinylidene Fluoride

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Effect of Ionicity of Three Protic Ionic Liquids as Neat Lubricants and Lubricant Additives to a Biolubricant

Coatings ◽

10.3390/coatings9110713 ◽

2019 ◽

Vol 9 (11) ◽

pp. 713 ◽

Cited By ~ 5

Author(s):

Hong Guo ◽

Angela Rina Adukure ◽

Patricia Iglesias

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Friction And Wear ◽

Cost Effective ◽

Lubricant Additive ◽

Lubricant Additives ◽

Environmental Damage ◽

Protic Ionic Liquids ◽

Protic Ionic Liquid ◽

Wear Process

Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential to increase the efficiency and durability of mechanical components without increasing the environmental damage. In this work, three halogen-free protic ionic liquids with increasing extent of ionicity, 2-hydroxyethylammonium 2-ethylhexanoate, 2-hydroxymethylammonium 2-ethylhexancate, and 2-hydroxydimethylammonium 2-ethylhexanoate, were synthesized and studied as neat lubricants and additives to a biodegradable oil in a steel–steel contact. The results show that the use of any protic ionic liquid as a neat lubricant or lubricant additive reduced friction and wear with respect to the biodegradable oil. The ionic liquid with the lowest ionicity reached the highest wear reduction. The one possessing the highest ionicity presented the poorest friction and wear behaviors as a neat lubricant, probably due to the more ionic nature of this liquid, which promoted tribocorrosion reactions on the steel surface. This ionic liquid performed better as an additive, showing that a small addition of this liquid in a biodegradable oil is enough to form protective layers on steel surfaces. However, it is not enough to accelerate the wear process with detrimental tribocorrosion reactions.

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High throughput approach to investigating ternary solvents of aqueous non-stoichiometric protic ionic liquids

Physical Chemistry Chemical Physics ◽

10.1039/c8cp05894f ◽

2019 ◽

Vol 21 (13) ◽

pp. 6810-6827 ◽

Cited By ~ 5

Author(s):

Dilek Yalcin ◽

Calum J. Drummond ◽

Tamar L. Greaves

Keyword(s):

Surface Tension ◽

Ionic Liquid ◽

Ionic Liquids ◽

High Throughput ◽

Self Assembly ◽

Protic Ionic Liquids ◽

Systematic Data ◽

Solvent Systems ◽

Compositional Space

High throughput methods were used to investigate ionic liquid containing solutions to provide systematic data of a broad compositional space. We have principally focused on the surface tension, apparent pH and liquid nanostructure to identify potential self-assembly and protein stabilizing ability of solvent systems.

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