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Ionic properties of an organic–inorganic sol–gel hybrid based on polydimethylsiloxane and tetraethoxysilane doped with sodium dodecyl sulfate
Author(s) -
Pinto Raffael Costa de Figueiredo,
de Araujo Paschoal Carlos William,
Paraguassu Waldeci,
Castro Manoel Carvalho,
Tanaka Auro Atsuchi,
Filho Jaime Soares Boaventura,
José Nadia Mamede
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30654
Subject(s) - polydimethylsiloxane , sodium dodecyl sulfate , membrane , materials science , chemical engineering , dielectric spectroscopy , ionic bonding , hybrid material , ionic conductivity , sol gel , polymer chemistry , chemistry , inorganic chemistry , chromatography , ion , electrolyte , organic chemistry , composite material , nanotechnology , electrochemistry , electrode , biochemistry , engineering
In this work, we performed impedance spectroscopy measurements of organically modified silicate membranes based on polydimethylsiloxane (PDMS) and tetraethoxysilane (TEOS) with the inclusion of sodium dodecyl sulfate (SDS) at five different concentrations. The results indicated that the conduction in a pure PDMS/TEOS hybrid membrane mainly resulted from a hopping mechanism. The conduction of membranes modified with the addition of SDS increased for SDS concentrations up to 20% and decreased for higher concentrations. This effect was explained on the basis of the porosity of the membranes due to SDS. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010