Dielectric properties of layered silicate-reinforced natural and polyurethane rubber nanocomposites

G. C. Psarras, K. G. Gatos, J. Karger-Kocsis

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Natural rubber (NR), polyurethane rubber (PUR), and NR/PUR-based nanocomposites were prepared by adding a pristine synthetic layered silicate (LS; sodium fluorohectorite) in 10 parts per hundred parts rubber, following the latex compounding route. The dispersion of the LS latices in the composites was studied by means of X-ray diffraction (XRD) and transmission electron microscopy (TEM). The morphology-dependent dielectric properties of the produced nanocomposites were examined using broadband dielectric spectroscopy (BDS) at ambient temperature. Besides the glass/rubber transition of the polymer matrices, interfacial polarization (IP) is evident in the produced nanocomposites. The ot-relaxation, as well as the β-mode, in the PUR-containing nanocomposites proved to be less affected by the presence of LSs. The obtained experimental data suggest that the LS is more compatible with and thus better intercalated by the PUR than by the NR which was prevulcanized in this case.

Original languageEnglish
Pages (from-to)1405-1411
Number of pages7
JournalJournal of Applied Polymer Science
Volume106
Issue number2
DOIs
Publication statusPublished - Oct 15 2007

Fingerprint

Silicates
Polyurethanes
Rubber
Dielectric properties
Nanocomposites
Latexes
Dielectric spectroscopy
Latex
Polymer matrix
Sodium
Polarization
Transmission electron microscopy
X ray diffraction
Glass
Composite materials

Keywords

  • Dielectric spectroscopy
  • Layered silicate
  • Nanotechnology
  • Natural rubber
  • Polyurethane

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Dielectric properties of layered silicate-reinforced natural and polyurethane rubber nanocomposites. / Psarras, G. C.; Gatos, K. G.; Karger-Kocsis, J.

In: Journal of Applied Polymer Science, Vol. 106, No. 2, 15.10.2007, p. 1405-1411.

Research output: Contribution to journalArticle

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