Relaxation dynamics in glycerol-water mixtures: I. Glycerol-rich mixtures

被引:97
作者
Puzenko, A
Hayashi, Y
Ryabov, YE
Balin, I
Feldman, Y [1 ]
Kaatze, U
Behrends, R
机构
[1] Hebrew Univ Jerusalem, Dept Appl Phys, IL-91904 Jerusalem, Israel
[2] Univ Gottingen, Inst Phys, D-37073 Gottingen, Germany
关键词
D O I
10.1021/jp0445122
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We discuss the relaxation dynamics of glycerol-water mixtures, as studied by dielectric spectroscopy in the frequency range from 1 Hz to 250 MHz and at temperatures between 173 and 323 K. The experimental results obtained for the glycerol-rich mixtures suggest that the main dielectric relaxation process, as well as the so-called high-frequency "excess wing" (EW) and dc conductivity, follow the same temperature dependence. This result indicates that all of these processes are induced by the same molecular origin. A new phenomenological function is proposed to describe the whole dielectric spectrum in the covered frequency range, and some possible mechanisms of dielectric behaviors through the dc conductivity, the main relaxation process, and the EW are discussed.
引用
收藏
页码:6031 / 6035
页数:5
相关论文
共 34 条
  • [1] Reexamination of the evolution of the dynamic susceptibility of the glass former glycerol -: art. no. 011504
    Adichtchev, S
    Blochowicz, T
    Tschirwitz, C
    Novikov, VN
    Rössler, EA
    [J]. PHYSICAL REVIEW E, 2003, 68 (01): : 10 - 115041
  • [2] RELAXATION IN LIQUIDS, POLYMERS AND PLASTIC CRYSTALS - STRONG FRAGILE PATTERNS AND PROBLEMS
    ANGELL, CA
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1991, 131 : 13 - 31
  • [3] A new Vogel-like law: Ionic conductivity, dielectric relaxation, and viscosity near the glass transition
    Bendler, JT
    Fontanella, JJ
    Shlesinger, MF
    [J]. PHYSICAL REVIEW LETTERS, 2001, 87 (19) : 1 - 195503
  • [4] Susceptibility functions for slow relaxation processes in supercooled liquids and the search for universal relaxation patterns
    Blochowicz, T
    Tschirwitz, C
    Benkhof, S
    Rössler, EA
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2003, 118 (16) : 7544 - 7555
  • [5] BOTTCHER CJF, 1978, THEORY ELECTRIC POLA, V2
  • [6] Is there an excess wing in the dielectric loss of plastic crystals?
    Brand, R
    Lunkenheimer, P
    Schneider, U
    Loidl, A
    [J]. PHYSICAL REVIEW LETTERS, 1999, 82 (09) : 1951 - 1954
  • [7] Relaxation dynamics in plastic crystals
    Brand, R
    Lunkenheimer, P
    Loidl, A
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (23) : 10386 - 10401
  • [8] DIELECTRIC RELAXATION IN GLYCEROL, PROPYLENE GLYCOL, AND NORMAL-PROPANOL
    DAVIDSON, DW
    COLE, RH
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1951, 19 (12) : 1484 - 1490
  • [9] SCALING IN THE RELAXATION OF SUPERCOOLED LIQUIDS
    DIXON, PK
    WU, L
    NAGEL, SR
    WILLIAMS, BD
    CARINI, JP
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (09) : 1108 - 1111
  • [10] Donth E., 2001, The Glass Transition: Relaxation Dynamics in Liquids, Diordered Materials