Temperature dependent dielectric relaxation of ionic liquid ([bmim][BF4])/alcohol binary mixtures

2017 ◽  
Vol 41 (17) ◽  
pp. 9330-9337 ◽  
Author(s):  
Man Yang ◽  
Liyan Ma ◽  
Kongshuang Zhao
Keyword(s):  
Ionic Liquid ◽  
Dielectric Relaxation ◽  
Binary Mixtures ◽  
Dielectric Spectroscopy ◽  
Spectroscopy Study ◽  
Frequency Range ◽  
Temperature Dependent

A dielectric spectroscopy study on the binary mixtures of the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) and four kinds of alcohols as a function of temperature was carried out over a frequency range of 100 MHz to 20 GHz.

scholarly journals Dielectric relaxation of nonaqueous ionic liquid microemulsions: polarization, microstructure, and phase transition

RSC Advances ◽  
2017 ◽  
Vol 7 (23) ◽  
pp. 13733-13741 ◽  
Author(s):  
Cancan Zhang ◽  
Zhen Zhen ◽  
Liyan Ma ◽  
Kongshuang Zhao
Keyword(s):  
Phase Transition ◽  
Ionic Liquid ◽  
Dielectric Relaxation ◽  
Dielectric Spectroscopy ◽  
Wide Frequency Range ◽  
Frequency Range ◽  
40 Hz

Two nonaqueous ionic liquid (IL) microemulsions (toluene/TX-100/[bmim][PF6] and [bmim][BF4]/TX-100/benzene) were studied by dielectric spectroscopy covering a wide frequency range (40 Hz to 110 MHz).

High Frequency Dielectric Response of the Ionic Liquid N-Methyl-N-ethylpyrrolidinium Dicyanamide

2007 ◽  
Vol 60 (1) ◽  
pp. 6 ◽  
Author(s):  
Simon Schrödle ◽  
Gary Annat ◽  
Douglas R. MacFarlane ◽  
Maria Forsyth ◽  
Richard Buchner ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Dielectric Loss ◽  
Dielectric Relaxation ◽  
High Frequency ◽  
Dielectric Response ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Dielectric Relaxation Spectroscopy ◽  
Frequency Range ◽  
Fast Rotation

A study of the room-temperature ionic liquid N-methyl-N-ethylpyrrolidinium dicyanamide by dielectric relaxation spectroscopy over the frequency range 0.2 GHz ≤ ν ≤ 89 GHz has revealed that, in addition to the already known lower frequency processes, there is a broad featureless dielectric loss at higher frequencies. The latter is probably due to the translational (oscillatory) motions of the dipolar ions of the IL relative to each other, with additional contributions from their fast rotation.

scholarly journals Disruption of the self-molecular association of pentanol in binary mixtures with alkylbenzoates: a dielectric relaxation spectroscopy study

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1260-1267 ◽  
Author(s):  
Samiyara Begum ◽  
Abhinay Vardhan ◽  
Atul Chaudhary ◽  
Ranga Subramanian
Keyword(s):  
Dielectric Relaxation ◽  
Binary Mixtures ◽  
Molecular Association ◽  
The Self ◽  
Dielectric Relaxation Spectroscopy ◽  
Spectroscopy Study ◽  
Rich Region ◽  
Relaxation Study

A dielectric relaxation study of binary mixtures of associative pentanol isomers and non-associative alkylbenzoates at different mole fractions revealed that the effective dipole rotates faster in the alkylbenzoate rich region.

Effect of grafting density on conformation of poly(acrylic acid) in solution by dielectric spectroscopy

Soft Matter ◽  
2018 ◽  
Vol 14 (35) ◽  
pp. 7190-7203 ◽  
Author(s):  
Xinlu Zhou ◽  
Kongshuang Zhao
Keyword(s):  
Acrylic Acid ◽  
Ethylene Oxide ◽  
Dielectric Relaxation ◽  
Dielectric Spectroscopy ◽  
Dielectric Relaxation Spectroscopy ◽  
Frequency Range ◽  
Grafting Density ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Acrylic Acid

The effect of grafting density of poly(ethylene oxide) and dodecyl groups on the conformation of poly(acrylic acid) in solution was clarified by dielectric relaxation spectroscopy over a frequency range from 40 Hz to 110 MHz.

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