Structures of water and primary alcohol studied by microwave dielectric analyses

By the use of the time domain reflectometry method dielectric measurements were carried out first on methanol mixtures with ethanol and 1‐propanol, and second, water mixtures with methanol, ethanol and 1‐propanol in the frequency range 10 MHz–20 GHz. The first mixtures show a Debye relaxation and logarithm of the relaxation time is given by a linear function of the mole fraction of methanol. These mixtures have the same chainlike cluster of pure alcohol. The second mixtures show the same trend of the relaxation time in a region 0≤xw 0.83 and that the cluster must be cyclic, consisting of six molecules.

[1]  Walter Kauzmann,et al.  The Structure and Properties of Water , 1969 .

[2]  G. Chryssikos,et al.  Time domain reflection methods for dielectric measurements to 10 GHz , 1989 .

[3]  S. Yagihara,et al.  Dielectric study on hydration of B‐, A‐, and Z‐DNA , 1990, Biopolymers.

[4]  K. Nishikawa,et al.  Small-angle x-ray scattering study of fluctuations in 1-propanol-water and 2-propanol-water systems , 1990 .

[5]  N. Shinyashiki,et al.  Dielectric dispersion of primary alcohols in polymer complex , 1990 .

[6]  R. Cole,et al.  Approach to glassy behavior of dielectric relaxation in 3‐bromopentane from 298 to 107 K , 1986 .

[7]  N. Shinyashiki,et al.  Dielectric study on dynamics of water in polymer matrix using a frequency range 106–1010 Hz , 1990 .

[8]  N. Sasaki,et al.  Microwave dielectric study on hydration of moist collagen , 1990, Biopolymers.

[9]  N. E. Hill,et al.  Dielectric properties and molecular behaviour , 1969 .

[10]  R. Cole,et al.  Evaluation of dielectric behavior by time domain spectroscopy. 3. Precision difference methods , 1980 .

[11]  S. Havriliak,et al.  A complex plane representation of dielectric and mechanical relaxation processes in some polymers , 1967 .

[12]  H. A. Levy,et al.  X-ray diffraction study of liquid water in the temperature range 4–200°C , 1967 .

[13]  N. Shinyashiki,et al.  Evaluation of complex permittivity of aqueous solution by time domain reflectometry , 1987 .

[14]  R. Cole,et al.  Dielectric Relaxation in Glycerine , 1950 .

[15]  S. Yagihara,et al.  The dielectric relaxation of mixtures of water and primary alcohol , 1989 .