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DIELECTRIC RELAXATION OF DIHYDRIC ALCOHOL-1,4-DIOXANE MIXTURES USING TIME DOMAIN TECHNIQUE
被引:3
|作者:
Shinde, M. N.
[1
]
Talware, R. B.
[1
]
Kumbharkhane, A. C.
[1
]
机构:
[1] Swami Ramanand Teerth Marathwada Univ, Sch Phys Sci, Nanded 431606, Maharashtra, India
来源:
LITHUANIAN JOURNAL OF PHYSICS
|
2011年
/
51卷
/
01期
关键词:
dielectric relaxation;
time domain reflectometry;
alcohols;
ALCOHOL-WATER MIXTURES;
PLUS LIQUID EQUILIBRIUM;
TEMPERATURE;
313.15;
K;
BINARY-MIXTURES;
DYNAMICAL STRUCTURES;
REFRACTIVE-INDEXES;
BEHAVIOR;
N;
N-DIMETHYLACETAMIDE;
CONSTANTS;
VISCOSITY;
D O I:
10.3952/lithjphys.51102
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Complex dielectric permittivity measurements of 1,2-propanediol-1,4-dioxane mixtures has been carried out at different concentration and in the frequency range of 10 MHz to 20 GHz using time domain reflectometry (TDR). The least squares fit method has been used to obtain the static dielectric constant, relaxation time, and Bruggeman factor for binary mixtures. The Kirkwood-Frohlich theory is applied to compute the dielectric constant for the mixtures. It adequately reproduces the experimental values of static dielectric constants for the 1,2-propanediol-dioxane mixtures. The excess parameters confirm that the heteromolecular hydrogen bonding interactions between 1,2-propanediol and dioxane molecules vary significantly in the mixture. The Bruggeman model for the nonlinear case has been fitted to the experimental dielectric data for mixtures.
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页码:39 / 45
页数:7
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