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Structure of montmorillonite cointercalated with stearic acid and octadecylamine: Modeling, diffraction, IR spectroscopy

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dc.title Structure of montmorillonite cointercalated with stearic acid and octadecylamine: Modeling, diffraction, IR spectroscopy en
dc.contributor.author Čapková, Pavla
dc.contributor.author Pospíšil, Miroslav
dc.contributor.author Valášková, Marta
dc.contributor.author Měřínská, Dagmar
dc.contributor.author Trchová, Miroslava
dc.contributor.author Sedláková, Zdeňka
dc.contributor.author Weiss, Zdeněk
dc.contributor.author Šimoník, Josef
dc.relation.ispartof Journal of Colloid and Interface Science
dc.identifier.issn 0021-9797 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2006-08-01
utb.relation.volume 300
utb.relation.issue 1
dc.citation.spage 264
dc.citation.epage 269
dc.type article
dc.language.iso en
dc.publisher Academic Press en
dc.identifier.doi 10.1016/j.jcis.2006.03.033
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0021979706002244
dc.subject polymer-clay nanocomposites en
dc.subject intercalation en
dc.subject montmorillonite en
dc.subject octadecylamine en
dc.subject stearic acid en
dc.subject molecular modeling en
dc.subject IR spectroscopy en
dc.subject X-ray diffraction en
dc.description.abstract Structural analysis of Na-montmorillonite co-intercalated with octadecylamine and stearic acid was carried out using combination of experiment: X-ray powder diffraction and IR spectroscopy with molecular modeling (force field calculations) in Cerius(2) modeling environment. Results of structure analysis revealed the chemical reaction of guest compounds leading to the formation of octadecylammonium stearate. This reaction may occur even before the intercalation out of the interlayer space of montmorillonite. The presence of octadecyl ammonium stearate in the samples was clearly confirmed by IR spectroscopy and X-ray diffraction. Present results also showed that: (1) Stearic acid itself does not intercalate into Na-montmorillonite; (2) cointercalation with octadecylamine led to the formation of octadecylammonium stearate, which was successfully intercalated into the interlayer space of montmorillonite, and (3) Na-montmorillonite intercalated with octadecylammonium stearate does not create a stable structure. Intercalated samples in ambient conditions undergo gradual decomposition, accompanied by the release of octadecylammonium stearate from the interlayer space and rearrangement of the interlayer structure. Co-intercalation of STA and ODA to lower the octadecylamine content and consequently to suppress the unfavorable effect of amine groups on the polymer matrix in nanocomposite, was investigated. (c) 2006 Elsevier Inc. All rights reserved. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002078
utb.identifier.obdid 43865427
utb.identifier.scopus 2-s2.0-33746904836
utb.identifier.wok 000238877700035
utb.identifier.coden JCISA
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:25Z
dc.date.available 2011-08-16T15:06:25Z
utb.contributor.internalauthor Měřínská, Dagmar
utb.contributor.internalauthor Šimoník, Josef
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