Quantitative characterization of the structure of PP/layered silicate nanocomposites at various length scales

Zita Dominkovics, Károly Renner, Béla Pukánszky

Research output: Contribution to journalArticle

2 Citations (Scopus)


The structure and rheological properties of a large number of layered silicate polypropylene nanocomposites were studied with widely varying compositions. Unlike general practice, morphology was characterized at different length scales covering several decades by SEM, TEM, and XRD. Rheological measurements supplied additional information about structure. The results showed that these materials possess a very complex structural architecture. The introduction of a functlonalized polymer decreases the size of the original clay particles. However, relatively large silicate particles were found also in composite samples yielding XRD traces without silicate reflection. We found that not only two (individual layers, intercalated stacks), but four morphological entities, i.e. also particles and a silicate network, may be present simultaneously in the composites. An attempt was made to characterize morphology quantitatively, wherever possible. SEM and TEM micrographs were evaluated by image analysis, XRD traces by curve fitting, while a model was developed to determine relaxation time from rheological measurements, but only XRD and SEM results are reported here.

Original languageEnglish
Pages (from-to)52-56
Number of pages5
JournalMacromolecular Symposia
Issue number1
Publication statusPublished - Jun 1 2008


  • Layered silicates
  • PP
  • Rheology
  • SEM
  • Structure
  • TEM
  • WAXS

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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