The multiple dynamics using dielectric spectroscopy on n-propanol (nP) have already been published, but the origins of each process are open problems yet. According to the Hansen's analysis on the lineshape of nP, 3 different relaxation modes were classified: a slow Debye-type relaxation process, the #alpha#-relaxation process whose relaxation frequency well matches those of the viscosity, PCS and Brillouin results and the Johari-Goldstein type #beta#-relaxation process. In the present paper we followed this analysis on nP and extended the experimental materials to i-propanol (iP) and their deuterated ones, nP-d1 and iP-d1, to clarify the role of hydrogen bonding and the structural effect of the dielectric dynamics.
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