You are in the accessibility menu

Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorChaker, J. A.-
dc.contributor.authorDahmouche, K.-
dc.contributor.authorSantilli, Celso Valentim-
dc.contributor.authorPulcinelli, Sandra Helena-
dc.contributor.authorBriois, V-
dc.contributor.authorJudeinstein, P.-
dc.contributor.authorCraievich, A. F.-
dc.identifier.citationJournal of the European Ceramic Society. Oxford: Elsevier B.V., v. 25, n. 12, p. 2617-2621, 2005.-
dc.description.abstractSiloxane-polyoxypropylene (PPO) hybrids obtained by the sol-gel process and containing short polymer chain have been doped with different sodium salts NaX (X = ClO4, BF4 or I). The effect of the counter-ion (X) on the chemical environment of the sodium ions and on the ionic conductivity of these hybrids was investigated by Na-23 NMR, small angle X-ray scattering (SAXS), complex impedance, Raman spectroscopy and differential scanning calorimetry (DSC). Results reveal that the different sodium salts have essentially the same effect on the nanoscopic structure of the hybrids. The formation of immobile Na+ cations involved in NaCl-like species could be minimized by using a low amount of HCl as hydrolytic catalyst. The differences in the ionic conductivity of hybrids doped with different sodium salts were correlated with the proportion of Na ions solvated by ether-type oxygen of the polymeric chains and by the carboxyl oxygen located in the urea groups of the PPO chain extremities. (c) 2005 Elsevier Ltd. All rights reserved.en
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjecthybrid materialspt
dc.subjectionic conductivitypt
dc.subjectsol-gel processespt
dc.titleEffect of salt nature on structure and ionic conductivity of sodium-doped siloxane-PPO ormolytesen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionCtr Univ Paris Sud-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationCtr Univ Paris Sud, LURE, F-91898 Orsay, France-
dc.description.affiliationCtr Univ Paris Sud, Lab Chim Struct Organ, F-91405 Orsay, France-
dc.description.affiliationUSP, Inst Fis, BR-05315970 São Paulo, Brazil-
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of the European Ceramic Society-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.