Aggregation behavior of latex particles in shear flow confined between two parallel plates

Yosuke Kikuchi, Hirotsugu Yamada, Hiromi Kunimori, Takao Tsukada, Mitsunori Hozawa, Chiaki Yokoyama, Masaki Kubo

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this study, the aggregation and breakup behaviors of latex particles in shear flow confined between two parallel plates were investigated using an in situ observation apparatus with a laser scanning confocal microscope. To investigate the effects of shear rate and the gap width between two parallel plates on the size and structure of the aggregates in the steady state, the distributions of the projected cross-sectional area and perimeter-based fractal dimension of the aggregates were measured. As a result, the average size of the aggregates decreases as shear rate increases and the gap width decreases due to the hydrodynamic effect acting on the aggregates. The size distributions of the aggregates become narrow as the gap width decreases. In addition, the fractal dimension, that is, the structure of the aggregates, was almost independent of shear rate and the gap width and approximately 1.2, which suggests that the aggregates are relatively compact.

Original languageEnglish
Pages (from-to)3273-3278
Number of pages6
JournalLangmuir
Volume21
Issue number8
DOIs
Publication statusPublished - 2005 Apr 12

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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