The temperature behavior (100–400 K) of the mechanical characteristics (internal friction and resonant frequency) of polyethyleneoxide‐NaSCN polymeric electrolytes reveals the presence of anelastic relaxations, which arise from local and cooperative microscopic motions. The low‐temperature γ- relaxation is explained in terms of a relaxation time distribution, which is interpreted as arising from random deviations in the local arrangement of the relaxing particles. Moreover, the elastic and anelastic features, as a function of the salt content, give some insight concerning their microscopic origin and the connection between the structure and the fast ion dynamics in this kind of systems
Microscopic origin of anelastic relaxations in polyethilene oxide-sodium thiocyanate complexes
CARINI, Giuseppe;
1989-01-01
Abstract
The temperature behavior (100–400 K) of the mechanical characteristics (internal friction and resonant frequency) of polyethyleneoxide‐NaSCN polymeric electrolytes reveals the presence of anelastic relaxations, which arise from local and cooperative microscopic motions. The low‐temperature γ- relaxation is explained in terms of a relaxation time distribution, which is interpreted as arising from random deviations in the local arrangement of the relaxing particles. Moreover, the elastic and anelastic features, as a function of the salt content, give some insight concerning their microscopic origin and the connection between the structure and the fast ion dynamics in this kind of systemsPubblicazioni consigliate
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