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http://acervodigital.unesp.br/handle/11449/65922
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DC Field | Value | Language |
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dc.contributor.author | Dahmouche, K. | - |
dc.contributor.author | De Souza, P. H. | - |
dc.contributor.author | Bonagamba, T. J. | - |
dc.contributor.author | Paneppucci, H. | - |
dc.contributor.author | Judeinstein, P. | - |
dc.contributor.author | Pulcinelli, Sandra Helena | - |
dc.contributor.author | Santilli, Celso Valentim | - |
dc.date.accessioned | 2014-05-27T11:19:48Z | - |
dc.date.accessioned | 2016-10-25T18:15:58Z | - |
dc.date.available | 2014-05-27T11:19:48Z | - |
dc.date.available | 2016-10-25T18:15:58Z | - |
dc.date.issued | 1999-12-01 | - |
dc.identifier | http://dx.doi.org/10.1023/A:1008627424438 | - |
dc.identifier.citation | Journal of Sol-Gel Science and Technology, v. 13, n. 1-3, p. 909-913, 1999. | - |
dc.identifier.issn | 0928-0707 | - |
dc.identifier.uri | http://hdl.handle.net/11449/65922 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/65922 | - |
dc.description.abstract | Two groups of hybrid organic-inorganic composites exhibiting ionic conduction properties, so called ORMOLYTES (organically modified electrolytes), have been prepared by the sol-gel process. The first group has been prepared from mixture of a lithium salt and 3-isocyanatopropyltriethoxysilane(IsoTrEOS),O,O′-bis(2-aminopropyl) polypropyleneglycol. These materials produce chemical bonds between the organic (polymer) and the inorganic (silica) phases. The second group has been prepared by an ultrasonic method from a mixture of tetraethoxysilane (TEOS), polypropyleneglycol and a lithium salt. The organic and inorganic phases are not chemically bonded in these samples. The Li+ ionic conductivity, σ, of all these materials has been studied by AC impedance spectroscopy up to 100°C. Values of σ up to 10-6 Ω-1·cm-1 have been found at room temperature. A systematic study of the effects of lithium concentration, polymer chain length and the polymer to silica weight ratio on σ shows that there is a strong dependence of σ on the preparation conditions. The dynamic properties of the Li+ ion and the polymer chains as a function of temperature between -100 and 120°C were studied using 7Li solid-state NMR measurements. The ionic conductivity of both families are compared and particular attention is paid to the nature of the bonds between the organic and inorganic components. | en |
dc.format.extent | 909-913 | - |
dc.language.iso | eng | - |
dc.source | Scopus | - |
dc.subject | Hybrid material | - |
dc.subject | Ionic conductor | - |
dc.subject | Silica-polypropyleneglycol | - |
dc.subject | Solid electrolyte | - |
dc.subject | Chemical bonds | - |
dc.subject | Ionic conduction in solids | - |
dc.subject | Lithium | - |
dc.subject | Nuclear magnetic resonance | - |
dc.subject | Polyethers | - |
dc.subject | Silica | - |
dc.subject | Sol-gels | - |
dc.subject | Solid electrolytes | - |
dc.subject | Spectroscopic analysis | - |
dc.subject | Concentration (process) | - |
dc.subject | Inorganic compounds | - |
dc.subject | Ionic conduction | - |
dc.subject | Organic compounds | - |
dc.subject | Polymers | - |
dc.subject | Thermal effects | - |
dc.subject | Organically modified electrolytes | - |
dc.subject | Polypropylene glycols | - |
dc.subject | Hybrid materials | - |
dc.subject | Ionic conductors | - |
dc.subject | Lithium salts | - |
dc.subject | Polyelectrolytes | - |
dc.subject | Ions | - |
dc.title | Investigation of New Ion Conducting Ormolytes Silica-Polypropyleneglycol | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Universidade de São Paulo (USP) | - |
dc.contributor.institution | Université Paris-Sud | - |
dc.description.affiliation | Instituto de Química Universidade Estadual Paulista, Araraquara | - |
dc.description.affiliation | Inst. de Fis. de São Carlos Universidade de São Paulo, São Carlos | - |
dc.description.affiliation | Lab. de Chimie Structurale Organique Université Paris-Sud, Orsay | - |
dc.description.affiliation | Instituto de Quĩmica Universidade Estadual Paulista, Araraquara | - |
dc.description.affiliationUnesp | Instituto de Química Universidade Estadual Paulista, Araraquara | - |
dc.description.affiliationUnesp | Instituto de Quĩmica Universidade Estadual Paulista, Araraquara | - |
dc.identifier.doi | 10.1023/A:1008627424438 | - |
dc.identifier.wos | WOS:000078468200161 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Journal of Sol-Gel Science and Technology | - |
dc.identifier.scopus | 2-s2.0-0032305921 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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