2001
DOI: 10.1063/1.1370073
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The segmental dynamics of a polymer electrolyte investigated by coherent quasielastic neutron scattering

Abstract: The structural dynamics of a polymer electrolyte model material, poly͑prolyene oxide͒ (PPO)-LiClO 4 ͑and PPO for reference͒, has for the first time been studied using coherent quasielastic neutron scattering. By a combination of neutron spin echo and inverse time-of-flight techniques we investigate the relaxation function in an experimental time window 10 Ϫ12 Շt Շ10 Ϫ8 s at a momentum transfer corresponding to the distance between neighboring interchain segments. We find that the relaxation of the correlation … Show more

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Cited by 25 publications
(26 citation statements)
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“…8,14 Two limiting scenarios can explain such nonexponential relaxation. 8,14 Two limiting scenarios can explain such nonexponential relaxation.…”
Section: Discussionmentioning
confidence: 99%
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“…8,14 Two limiting scenarios can explain such nonexponential relaxation. 8,14 Two limiting scenarios can explain such nonexponential relaxation.…”
Section: Discussionmentioning
confidence: 99%
“…Following the common nomenclature in the literature, 8,[13][14][15]21 we disregard the difference between PPO and PPG and refer to the studied polymer as PPO. PPO ͑M w = 6510 g / mol͒ and LiClO 4 were purchased from Polymer Source Inc. and Aldrich, respectively.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…This opens the possibility to investigate and scrutinize in detail the relaxation dynamics of PPO, measured in recent inelastic neutron scattering studies. 35 These results will be presented separately. The accuracy of the model makes an extension to polymer electrolytes very tempting.…”
Section: Discussionmentioning
confidence: 99%
“…Because of its fundamental properties and a whole range of applications (14)(15)(16), thermodynamic and static-structure studies of PEO have been made using a plethora of experimental techniques (e.g., [17][18][19][20][21]. However, investigations of structural dynamics have been mainly focused on local segmental motions in the chains using molecular dynamics simulations and frequencydomain dielectric spectroscopy and neutron scattering (22)(23)(24)(25).…”
mentioning
confidence: 99%