Nonequilibrium structure of primary particles in colloidal bidispersion

Junjun Jia, Shuichi Iwata

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The nonequilibrium aggregation structure of primary particles in colloidal bidispersions is investigated at high volume fractions by Brownian dynamics simulations. It is found that introducing limited different sized particles in the monodispersion can obviously affect the short-range structures of primary particles. In a bidispersion, fractal dimension of aggregates, only consisting of primary particles, increases with increasing the size difference in the long-range scale. The structure factor S(q) of aggregates, obtained from the particle correlation function g(r), suggests that fractal structure disappears when the primary particles become not "primary" in volume fraction.

Original languageEnglish
Pages (from-to)1485-1493
Number of pages9
JournalColloid and Polymer Science
Volume288
Issue number14-15
DOIs
Publication statusPublished - 2010 Oct 1
Externally publishedYes

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Keywords

  • Brownian dynamics
  • Colloidal bidispersion
  • DLCA and RLCA
  • HHF approximation
  • Particle correlation function
  • Structure factor

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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