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Recycled PET nanocomposites improved by silanization of organoclays

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dc.title Recycled PET nanocomposites improved by silanization of organoclays en
dc.contributor.author Kráčalík, Milan
dc.contributor.author Studenovský, Martin
dc.contributor.author Mikešová, Jana
dc.contributor.author Sikora, Antonín
dc.contributor.author Thomann, Ralf
dc.contributor.author Friedrich, Christian
dc.contributor.author Fortelný, Ivan
dc.contributor.author Šimoník, Josef
dc.relation.ispartof Journal of Applied Polymer Science
dc.identifier.issn 0021-8995 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2007-10-15
utb.relation.volume 106
utb.relation.issue 2
dc.citation.spage 926
dc.citation.epage 937
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/app.26690
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/app.26690/abstract
dc.subject recycled PET en
dc.subject organoclay en
dc.subject silanization en
dc.description.abstract Recycled PET/organo-modified montmorillonite nanocomposites were prepared via melt compounding as a promising possibility of the used beverage bottles recovery. According to our previous work, the three suitable commercial organoclays Cloisite 25A, 10A, and 30B were additionally modified with [3-(glycidyloxy)propyl]trimethoxysilane, hexadecyltrimethoxysilane and (3-aminopropyl)trimethoxysilane. The selected organoclays were compounded in the concentration 5 wt % and their degree of intercalation/delamination was determined by wide-angle X-ray scattering and transmission electron microscopy. Modification of Cloisite 25A with [3-(glycidyloxy)propyl]trimethoxysilane increased homogeneity of silicate layers in recycled PET. Additional modification of Cloisite 10A and Cloisite 30B led to lower level of delamination concomitant with melt viscosity reduction. However, flow characteristics of all studied organoclay nanocomposites showed solid-like behavior at low frequencies. Silanization of commercial organoclays had remarkable impact on crystallinity and melt temperature decrease accompanied by faster formation of crystalline nuclei during injection molding. Thermogravimetric analysis showed enhancement of thermal stability of modified organoclays. The tensile tests confirmed significant increase of PET-R stiffness with organoclays loading and the system containing Cloisite 25A treated with [3-(glycidyloxy)propyl]trimethoxysilane revealed combination of high stiffness and extensibility, which could be utilized for production of high-performance materials by spinning, extrusion, and blow molding technologies. (C) 2007 Wiley Periodicals, Inc. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002110
utb.identifier.obdid 43865394
utb.identifier.scopus 2-s2.0-34548522738
utb.identifier.wok 000248891200026
utb.identifier.coden JAPNA
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:30Z
dc.date.available 2011-08-16T15:06:30Z
utb.contributor.internalauthor Sikora, Antonín
utb.contributor.internalauthor Fortelný, Ivan
utb.contributor.internalauthor Šimoník, Josef
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