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Effect of the Chain Length on the Inter- and Intramolecular Dynamics of Liquid Oligo(ethylene glycol)s

Schrödle, S. ; Buchner, Richard ; Kunz, Werner



Abstract

Precise complex permittivity spectra over the frequency range 0.15 GHz ≤ ν ≤ 89 GHz are reported for monodisperse (EGn, 1 ≤ n ≤ 6) and polydisperse (PEG174, PEG300, PEG400) oligo(ethylene glycol)s at 25 °C. Up to ∼20 GHz, the relaxation behavior of all samples can be reasonably described with empirical functions that reflect a broad and asym. relaxation time distribution, like the ...

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