Observation of aggregate structure of green and blue fluorescent powders suspended in heptane by interactive force measurement

Akira Otsuki, Jun Sadaki, Kunihiko Yamaguchi, Atsushi Shibayama, Toyohisa Fujita

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Three kinds of fluorescent powders were separated by means of organic liquid-liquid extraction for the recycling purpose. The effect of surfactant concentration on the separation of the fluorescent powders was observed. In this study, the effect was analyzed by observing aggregate structure of the green and blue fluorescent powders using an experimental apparatus, which measured the interactive force between two surfaces of glass hemisphere and flat plate under electric field. The maximum distance between two surfaces is 20 μm. The size of aggregates and adsorption state of green and blue fluorescent powders in heptane containing a certain amount of surfactant was measured. This method would be very useful for measuring the size of aggregate and the adsorption state of ultra fine particles dispersed in solution.

Original languageEnglish
Pages (from-to)86-91
Number of pages6
JournalInternational Journal of the Society of Material Engineering for Resources
Volume13
Issue number2
DOIs
StatePublished - Mar 2006
Externally publishedYes

Keywords

  • Adsorption state
  • Aggregate size
  • Fluorescent powder
  • Heptane
  • Interactive force measurement

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