Correlation between local structure and ionic conductivity of potassium-doped siloxane poly(propyleneoxyde) ormolytes

Chaker, Juliano; Dahmouche, Karim; Briois, Valérie; Santilli, Celso Valentim; Pulcinelli, Sandra Helena; Judeinstein, Patrick

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/68558

Title:

Correlation between local structure and ionic conductivity of potassium-doped siloxane poly(propyleneoxyde) ormolytes

Author(s):

Institution:

Universidade Estadual Paulista (UNESP)
Centre Universitaire Paris-Sud

ISSN:

0281-1847

Abstract:

The local order around K for K(CF3SO3) doped Siloxane-Poly(propyleneoxide) hybrids at different doping concentration was investigated by x-ray absorption spectroscopy (EXAFS and XANES) at the potassium K-edge. The results indicate that the use of HCl as hydrolytic catalyst for gelation induces the precipitation of KCl. The ionic conductivity is strongly related to the presence of oxygen atoms as first neighbours around potassium and to the amount of KCl precipitate. © Physica Scripta 2005.

Issue Date:

1-Dec-2005

Citation:

Physica Scripta T, v. T115, p. 516-519, 2005.

Time Duration:

516-519

Keywords:

Doping (additives)
Extended X ray absorption fine structure spectroscopy
Gelation
Ionic conductivity
Precipitation (chemical)
Hydrolytic catalysts
Ormolytes
Siloxanes
Potassium

Source:

http://dx.doi.org/10.1238/Physica.Topical.115a00516

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/68558

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