Three-dimensional structure of a nanocomposite material consisting of two kinds of nanofillers and rubbery matrix studied by transmission electron microtomography

Hiroshi Jinnai, Yuki Shinbori, Tatsuro Kitaoka, Keizo Akutagawa, Naruhiko Mashita, Toshio Nishi

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

The three-dimensional (3D) morphology of particulate fillers embedded in a rubbery matrix was examined by transmission electron microtomography (TEMT). Two types of nanofillers, i.e., carbon black (CB) and silica (Si) nanoparticles, were used as the nanofillers. Although the CB and Si nanoparticles were difficult to distinguish by conventional transmission electron microscopy (TEM), they appeared different by TEMT; the CB and Si nanoparticles appeared to be hollow and solid particles in the cross-sectional images of the TEMT 3D reconstruction, respectively, demonstrating that TEMT itself provided a unique particle-discriminative function. The nanoparticles were found to form aggregates in the matrix. It is intriguing that each aggregate was made of only one species; not a single aggregate contained both the CB and Si nanoparticles. A particle-packing algorithm was developed to estimate the positions of each primary nanoparticle inside the aggregates.

Original languageEnglish
Pages (from-to)6758-6764
Number of pages7
JournalMacromolecules
Volume40
Issue number18
DOIs
Publication statusPublished - 2007 Sep 4
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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