Montmorillonite co-intercalated with octadecylamine and stearic acid by low temperature melting and its influence on PP nanocomposites

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dc.contributor.author Měřínská, Dagmar
dc.contributor.author Chmielová, Marta
dc.contributor.author Kalendová, Alena
dc.contributor.author Weiss, Zdeněk
dc.contributor.author Čapková, Pavla
dc.contributor.author Šimoník, Josef
dc.date.accessioned 2006-10-19T12:43:42Z
dc.date.available 2006-10-19T12:43:42Z
dc.date.issued 2003
dc.identifier.citation International polymer processing : the journal of the Polymer Processing Society. en
dc.identifier.issn 0930-777X
dc.identifier.uri http://hdl.handle.net/10084/57260
dc.description.abstract Organically modified Na-montmorillonite (MMT) samples were prepared by co-intercalation of octadecylamine (ODA) and stearic acid (STA) using a low-temperature melting procedure A blend of MMT and ODA (with the ratio 1:0.5) was stirred for one minute at 80degreesC in a laboratory mixer and then different amount of STA (weight ratios of MMT + ODA: STA = 1:0.3 and 1:1) were added and stirred for another five minutes. The resulting mixture was annealed at the same temperature for one hour X-ray diffraction (XRD) powder patterns of two co-intercalated samples contain a non-regular set of d spacings of basal diffractions. The first basal diffraction with d = 4.8 nm probably gives evidence for prevalent bilayer molecular arrangement in the interlayer and the non-regular set of d spacings of basal diffractions indicates possible mixed-layer interstratification and/or disorder in the bilayer arrangement of the interlayer space. The set of basal diffractions in the XRD patterns of co-intercalated samples significantly differs from the set of basal diffractions in the patterns of the samples intercalated by only ODA or STA. XRD patterns of Na-montmorillonite sample intercalated with ODA (in the ratio of MMT: ODA = 1:0.5) and with STA (in the ratio of MMT: STA = 1:1) contain broadening peaks. Polypropylene (PP) nanocomposite samples were prepared by mixing MMT modified in the described mode into the PP matrix. To improve the PP affinity to intercalated MMT maleic anhydride modified PP as a compatibilizer was used. The level of PP nanocomposites exfoliation was evaluated by XRD technique. The influence of the nanofiller on mechanical properties was measured by tensile tests, and an improvement of mechanical properties was noticed. en
dc.language.iso en en
dc.publisher Hanser en
dc.relation.ispartofseries International polymer processing : the journal of the Polymer Processing Society en
dc.relation.uri http://www.polymer-process.com/directlink.asp?IPP1729 en
dc.title Montmorillonite co-intercalated with octadecylamine and stearic acid by low temperature melting and its influence on PP nanocomposites en
dc.type Article en
dc.identifier.location Není ve fondu ÚK en
dc.identifier.wos 000183942700005

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