Encapsulation of aluminum flakes by dispersion polymerization of styrene in a nonaqueous system with reactive surfactants

Kyung Wha Oh, Seong Hun Kim, Eun Ae Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Dispersion polymerization of styrene in ethanol was carried out to encapsulate aluminum flakes. The effects of three reactive surfactants, two anionic and one nonionic, were investigated. It was confirmed prior to encapsulation that these surfactants did not polymerize by themselves but did promote polymerization of styrene. The capsules obtained were characterized with respect to the morphology and mean size. The encapsulating efficiency of the polymer of the wall material, the wall thickness, and the molecular weight distribution were measured. The effects of the concentrations of styrene monomer and reactive surfactants on these characteristics were determined and discussed. Aluminum flakes were coagulated to form secondary particles and they were covered with fine polymer particles, which were precipitated in the continuous phase. To improve encapsulation, the auxiliary addition of nonionic surfactant was attempted. By controlling those concentrations, capsules covered with polymer layer were prepared.

Original languageEnglish
Pages (from-to)675-683
Number of pages9
JournalJournal of Applied Polymer Science
Volume81
Issue number3
DOIs
Publication statusPublished - 2001 Aug 18

Fingerprint

Styrene
Aluminum
Encapsulation
Surface-Active Agents
Polymers
Surface active agents
Polymerization
Capsules
Nonionic surfactants
Molecular weight distribution
Ethanol
Monomers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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Encapsulation of aluminum flakes by dispersion polymerization of styrene in a nonaqueous system with reactive surfactants. / Oh, Kyung Wha; Kim, Seong Hun; Kim, Eun Ae.

In: Journal of Applied Polymer Science, Vol. 81, No. 3, 18.08.2001, p. 675-683.

Research output: Contribution to journalArticle

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