Activation energy-activation volume master plots for ion transport behavior in polymer electrolytes and supercooled molten salts

Article Abstract:

The use of activation energy versus activation master plots are demonstrated to explore ion transport in typical fragile glass forming systems exhibiting non-Arrhenius behavior, which include solvent-free salt complexes in poly(ethylene oxide) (PEO) and low molecular weight poly(propylene oxide) (PPO) and molten 2Ca(NO(sub 3))(sub 2).3KNO(sub 3) (CKN). It is concluded that this may be a widespread pattern of behavior, as this link holds good for polymer electrolytes and for anhydrous molten salts.

Methods, Ions, Atomic properties, Radioactivation analysis, Activation analysis

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Polymer electrolytes based on room temperature ionic liquid: 2,3-dimethyl-1-octylimidazolium triflate

Article Abstract:

Room temperature ionic liquid 2,3-dimethyl-1-octylimida-zodium triflate (DMOImTf) is synthesized that shows a conductivity of 5.68 mS/cm and a viscosity of 26.4cP at 25 degree Celsius. The ionic conductivity of polymer electrolytes containing DMOImTf in poly-ethylene oxide (PEO) increases with the addition of propylene carbonate and the dispersion of nanosize-fumed silica improves its mechanical strength along with an improvement in conductivity.

Ionic solutions

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Evolution of composition, molar mass, and conductivity during the free radical copolymerization of polyelectrolytes

Article Abstract:

The kinetics and mechanisms of copolyelectrolyte synthesis and the physical characteristics of the resulting polymers are described. The results have helped in testing and improving the existing polyelectrolyte theories and have also provided tools for ultimately controlling and tailoring the synthesis and properties of copolyelectrolytes.

Petroleum Refineries, Petroleum refining, Polymerization, Dynamics, Dynamics (Mechanics), Mechanical properties, Structure

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