Thermal analysis and ionic conductivity of ionic liquid containing composites with different crosslinkers

Sterner, Elizabeth S.; Rosol, Z; Gross, Erin M.; Gross, Stephen M.

doi:10.1002/app.30894

Cited by 13 publications

(18 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cross-linking permits the improvement of mechanical stability without losing significant conductivity. [54][55][56] The limitation related to non miscibility is well illustrated by the confinement of ILs in epoxy-based networked polymers performed by curing epoxy resins with an amine in the presence of an IL. 57 The materials obtained exhibited threshold behaviour at 40 wt% loading of IL, moving from insulating with a high Young's modulus to ion conducting with a low Young's modulus, which reflected the transition from discrete microdroplets to a percolating phase of IL in the polymer network.…”

Section: Preparation Of Ionogelsmentioning

confidence: 99%

Ionogels, ionic liquid based hybrid materials

2011

View full text Add to dashboard Cite

The current interest in ionic liquids (ILs) is motivated by some unique properties, such as negligible vapour pressure, thermal stability and non-flammability, combined with high ionic conductivity and wide electrochemical stability window. However, for material applications, there is a challenging need for immobilizing ILs in solid devices, while keeping their specific properties. In this critical review, ionogels are presented as a new class of hybrid materials, in which the properties of the IL are hybridized with those of another component, which may be organic (low molecular weight gelator, (bio)polymer), inorganic (e.g. carbon nanotubes, silica etc.) or hybrid organic-inorganic (e.g. polymer and inorganic fillers). Actually, ILs act as structuring media during the formation of inorganic ionogels, their intrinsic organization and physicochemical properties influencing the building of the solid host network. Conversely, some effects of confinement can modify some properties of the guest IL, even though liquid-like dynamics and ion mobility are preserved. Ionogels, which keep the main properties of ILs except outflow, while allowing easy shaping, considerably enlarge the array of applications of ILs. Thus, they form a promising family of solid electrolyte membranes, which gives access to all-solid devices, a topical industrial challenge in domains such as lithium batteries, fuel cells and dye-sensitized solar cells. Replacing conventional media, organic solvents in lithium batteries or water in proton-exchange-membrane fuel cells (PEMFC), by low-vapour-pressure and non flammable ILs presents major advantages such as improved safety and a higher operating temperature range. Implementation of ILs in separation techniques, where they benefit from huge advantages as well, relies again on the development of supported IL membranes such as ionogels. Moreover, functionalization of ionogels can be achieved both by incorporation of organic functions in the solid matrix, and by encapsulation of molecular species (from metal complexes to enzymes) in the immobilized IL phase, which opens new routes for designing advanced materials, especially (bio)catalytic membranes, sensors and drug release systems (194 references).

show abstract

Section: Preparation Of Ionogelsmentioning

confidence: 99%

Ionogels, ionic liquid based hybrid materials

2011

View full text Add to dashboard Cite

show abstract

“…Recently, ionic liquids (ILs) have appeared as a novel class of green solvents that permit the compounding a series of conventional, not easily soluble natural biomasses. ILs are considered to be organic salts composed of large molecular ions and are generally liquids at room temperature . As promising alternatives to conventional organic solvents, they possess many unmatched favorable properties, for instance, good solubility, negligible vapor pressure, excellent thermal stability, a wide liquidus range, low flammability, and the ability to be easily recycled .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 1‐ethyl‐3‐methylimidazolium acetate based ionic liquid systems as a suitable solvent for collagen

Liu

Dan

et al. 2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

Collagen, a prominent biopolymer, which is famous for its excellent biological activity, has been used extensively for tissue engineering applications. In this study, a novel solvent system for collagen was developed with an ionic liquid, 1-ethyl-3-methylimidazolium acetate ([EMIM][Ac]), solvent system. A series of sodium salts were introduced into this solvent system to enhance collagen's dissolution procedure. The results show that the solubility of collagen was significantly influenced by the temperature and sodium salts. The solubility reached up to approximately 11% in the [EMIM][Ac]/Na 2 HPO 4 system at 45 C. However, the structure of the regenerated collagen (Col-regenerated) may have been damaged. Hence, we focused on the structural integrity of the collagen regenerated from the [EMIM][Ac] solvent system by the methods of sodium dodecyl sulfate-polyacrylamide gel electrophoresis, Fourier transform infrared spectroscopy, ultrasensitive differential scanning calorimetry, atomic force microscopy, X-ray diffraction, and circular dichroism because its signature biological and physicochemical properties were based on its structural integrity. Meanwhile, a possible dissolution mechanism was proposed. The results show that the triple-helical structure of collagen regenerated from the [EMIM][Ac] solvent system below 35 C was retained to a large extent. The biocompatibility of Col-regenerated was first characterized with a fibroblast adhesion and proliferation model. It showed that the Col-regenerated had almost the same good biological activity as nature collagen, and this indicated the potential application of [EMIM][Ac] in tissue engineering.

show abstract

“…In order to overcome this con, organic dipolar aprotic solvents can be added to ionic liquids. On a related note, RTILs are able to dissolve polymers with formation of ion conducting composites 20,21 for electrochemical applications. 7,17,22,23 In the present work, we consider the mixtures (with compositions between 0-100%) of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]) and acetonitrile (ACN) (Fig.…”

Section: Introductionmentioning

confidence: 99%

A new force field model of 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid and acetonitrile mixtures

Chaban

Prezhdo

2011

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Recently, we introduced a new force field (FF) to simulate transport properties of imidazolium-based room-temperature ionic liquids (RTILs) using a solid physical background. In the present work, we apply this FF to derive thermodynamic, structure, and transport properties of the mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate, [BMIM][BF(4)], and acetonitrile (ACN) over the whole composition range. Three approaches to derive a force field are formulated based on different treatments of the ion-ion and ion-molecule Coulomb interactions: unit-charge, scaled-charge and floating-charge approaches. The simulation results are justified with the help of experimental data on specific density and shear viscosity for these mixtures. We find that a phenomenological account (particularly, a simple scaled-charge model) of electronic polarization leads to the best-performing model. Remarkably, its validity does not depend on the molar fraction of [BMIM][BF(4)] in the mixture. The derived FF is so far the first molecular model which is able to simulate all transport properties of the mixtures, comprising RTIL and ACN, fully realistically.

show abstract

Thermal analysis and ionic conductivity of ionic liquid containing composites with different crosslinkers

Cited by 13 publications

References 36 publications

Ionogels, ionic liquid based hybrid materials

Ionogels, ionic liquid based hybrid materials

Evaluation of 1‐ethyl‐3‐methylimidazolium acetate based ionic liquid systems as a suitable solvent for collagen

A new force field model of 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid and acetonitrile mixtures

Contact Info

Product

Resources

About