Number of the records: 1  

Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility

  1. 1.
    SYSNO ASEP0334339
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitlePolyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility
    TitleNanokompozity polyamid/vrstevnatý silikát: Vztah mezi lomovou houževnatostí a molekulární mobilitou
    Author(s) Kotek, Jiří (UMCH-V) RID
    Kelnar, Ivan (UMCH-V) RID, ORCID
    Brus, Jiří (UMCH-V) RID, ORCID
    Urbanová, Martina (UMCH-V) RID, ORCID
    Source TitleE-Polymers. - : EUROPEAN POLYMER FEDERATION - ISSN 1618-7229
    -, č. 138 (2009), s. 1-11
    Number of pages11 s.
    Languageeng - English
    CountryUS - United States
    Keywordsnanocomposite ; toughness ; molecular mobility
    Subject RIVCD - Macromolecular Chemistry
    R&D ProjectsIAA400500602 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    KJB200500601 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    CEZAV0Z40500505 - UMCH-V (2005-2011)
    UT WOS000273086900001
    AnnotationThe study correlates toughness of polyamide nanocomposites with the molecular mobility of polymer segments in the amorphous phase. Nanocomposite systems with intercalated and fully exfoliated morphology were compared. The different morphology was imprinted in fracture behaviour, toughness of exfoliated nanocomposites was markedly lower that that of their intercalated counterparts. To explain this difference, a solid-state NMR was used as a selective tool for providing information about nanocomposites structure and, primarily, about dynamics of polymer segments. Comparison of NMR spin-relaxation behavior with fracture mechanics experiments revealed a close correlation between fracture toughness and the intensity of rapidly relaxing component of the amorphous phase.
    WorkplaceInstitute of Macromolecular Chemistry
    ContactEva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
    Year of Publishing2010
Number of the records: 1