The effect of cationic surfactant and some organic/inorganic additives on the morphology of mesostructured silica templated by pluronics

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dc.citation.epage555en_US
dc.citation.issueNumber3en_US
dc.citation.spage548en_US
dc.citation.volumeNumber115en_US
dc.contributor.authorPoyraz, A. S.en_US
dc.contributor.authorAlbayrak, C.en_US
dc.contributor.authorDag, Ö.en_US
dc.date.accessioned2015-07-28T11:58:12Z
dc.date.available2015-07-28T11:58:12Z
dc.date.issued2008-11-01en_US
dc.departmentDepartment of Chemistryen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractTri-block copolymers (poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), represented as EOxPOyEOx), pluronics (F127=EO106PO70EO106, P65=EO20PO30EO20, P85=EO27PO39EO27, P103= EO17PO55EO17, and P123 = EO20PO70EO20) and cationic surfactants (cethyltrimethylammonium bromide (CTAB)), two surfactant systems, form complex micelles that self-assemble into mesostructured particles with distinct morphology depending on the pluronic type, the concentration of the cationic surfactant and the organic-inorganic ingredients in a siliceous reaction media under acidic conditions. The CTAB-P65 and CTAB-P85 systems form spheres, CTAB-P103 and CTAB-P123 systems form wormlike particles, and CTAB-F127 system form single crystals of mesostructured silica particles under very similar conditions. However addition of various salts (such as KCI and NaNO3) into a CTAB-P103 or CTAB-P123 solution system and cyclohexane and KCI into a CTAB-P85 solution system produces the mesostructured silica spheres and wormlike particles, respectively. By controlling the hydrophilic-hydrophobic character of the pluronics, core-corona interface, by means of additives, such as small organic molecules or salts, one could obtain the desired morphology that is dictated by the shape of the micelles of the pluronic-cationic surfactant complex. The effects of the additives and the formation mechanism of those morphologies have been discussed using spectroscopy (FT-IR and Raman), diffraction (XRD) and microscopy (POM and SEM) data. (c) 2008 Elsevier Inc. All rights reserved.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T11:58:12Z (GMT). No. of bitstreams: 1 10.1016-j.micromeso.2008.02.033.pdf: 1266028 bytes, checksum: 14f8f9ef1560aa29defba966e1d2ee40 (MD5)en
dc.identifier.doi10.1016/j.micromeso.2008.02.033en_US
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/11693/11623
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.micromeso.2008.02.033en_US
dc.source.titleMicroporous and Mesoporous Materialsen_US
dc.subjectMesoporous silicaen_US
dc.subjectSpheresen_US
dc.subjectWormlike particlesen_US
dc.subjectCationic-pluronic interactionsen_US
dc.subjectMorphologyen_US
dc.titleThe effect of cationic surfactant and some organic/inorganic additives on the morphology of mesostructured silica templated by pluronicsen_US
dc.typeArticleen_US

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