On the non-exponentiality of the dielectric Debye-like relaxation of monoalcohols

被引:17
作者
Arrese-Igor, S. [1 ]
Alegria, A. [1 ,2 ]
Colmenero, J. [1 ,2 ,3 ]
机构
[1] UPV, EHU, CSIC, Ctr Fis Mat,MPC, Paseo Manuel Lardizabal 5, San Sebastian 20018, Spain
[2] UPV, EHU, Dept Fis Mat, Apartado 1072, San Sebastian 20080, Spain
[3] DIPC, Paseo Manuel Lardizabal 4, San Sebastian 20018, Spain
关键词
AMORPHOUS POLYMERS; ALPHA-RELAXATION; DYNAMICS; ALCOHOLS; SIMULATIONS;
D O I
10.1063/1.4978585
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 have investigated the Debye-like relaxation in a series of monoalcohols (MAs) by broadband dielectric spectroscopy and thermally stimulated depolarization current techniques in order to get further insight on the time dispersion of this intriguing relaxation. Results indicate that the Debyelike relaxation of MAs is not always of exponential type and conforms well to a dispersion of Cole-Davidson type. Apart from the already reported non-exponentiality of the Debye-like relaxation in 2-hexyl-1-decanol and 2-butyl-1-octanol, a detailed analysis of the dielectric permittivity of 5-methyl-3-heptanol shows that this MA also presents some extent of dispersion on its Debye-like relaxation which strongly depends on the temperature. Results suggest that the non-exponential character of the Debye-like relaxation might be a general characteristic in the case of not so intense Debye-like relaxations relative to the ff relaxation. Finally, we briefly discuss on the T-dependence and possible origin for the observed dispersion. Published by AIP Publishing.
引用
收藏
页数:10
相关论文
共 35 条
  • [1] Communication: Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies
    Adrjanowicz, K.
    Jakobsen, B.
    Hecksher, T.
    Kaminski, K.
    Dulski, M.
    Paluch, M.
    Niss, K.
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2015, 143 (18)
  • [2] Dielectric investigation of the temperature dependence of the nonesponentiality of the dynamics of polymer melts
    Alegría, A
    Colmenero, J
    Mari, PO
    Campbell, IA
    [J]. PHYSICAL REVIEW E, 1999, 59 (06): : 6888 - 6895
  • [3] On the interpretation of the TSDC results in the study of the alpha-relaxation of amorphous polymers
    Alegria, A
    Goitiandia, L
    Colmenero, J
    [J]. POLYMER, 1996, 37 (14) : 2915 - 2923
  • [4] alpha-Relaxation in the glass-transition range of amorphous polymers .2. Influence of physical aging on the dielectric relaxation
    Alegria, A
    Goitiandia, L
    Telleria, I
    Colmenero, J
    [J]. MACROMOLECULES, 1997, 30 (13) : 3881 - 3887
  • [5] RELATIONSHIP BETWEEN THE TIME-DOMAIN KOHLRAUSCH-WILLIAMS-WATTS AND FREQUENCY-DOMAIN HAVRILIAK-NEGAMI RELAXATION FUNCTIONS
    ALVAREZ, F
    ALEGRIA, A
    COLMENERO, J
    [J]. PHYSICAL REVIEW B, 1991, 44 (14): : 7306 - 7312
  • [6] MOLECULAR RELAXATION IN A FLUCTUATING ENVIRONMENT
    ANDERSON, JE
    ULLMAN, R
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1967, 47 (06) : 2178 - &
  • [7] Dielectric relaxation of 2-ethyl-1-hexanol around the glass transition by thermally stimulated depolarization currents
    Arrese-Igor, S.
    Alegria, A.
    Colmenero, J.
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2015, 142 (21)
  • [8] Chain Dynamics on Crossing the Glass Transition: Nonequilibrium Effects and Recovery of the Temperature Dependence of the Structural Relaxation
    Arrese-Igor, S.
    Alegria, A.
    Colmenero, J.
    [J]. ACS MACRO LETTERS, 2014, 3 (11): : 1215 - 1219
  • [9] Polymer Chain Dynamics: Evidence of Nonexponential Mode Relaxation Using Thermally Stimulated Depolarization Current Techniques
    Arrese-Igor, S.
    Alegria, A.
    Colmenero, J.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 113 (07)
  • [10] Structure and dynamics of monohydroxy alcohols-Milestones towards their microscopic understanding, 100 years after Debye
    Boehmer, Roland
    Gainaru, Catalin
    Richert, Ranko
    [J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2014, 545 (04): : 125 - 195