Soap-free synthesis for producing highly monodisperse, micrometer-sized polystyrene particles up to 6 μm

Yasuyuki Yamada, Tatsuro Sakamoto, Shunchao Gu, Mikio Konno

研究成果: Article査読

41 被引用数 (Scopus)

抄録

A soap-free emulsion polymerization method with the use of an amphoteric initiator, currently proposed by the authors for producing highly monodisperse, micrometer-sized polymer particles, was examined in the polymerization of styrene with a 2,2′-azobis [N-(2-carboxyethyl)-2-2-methylpropionamidine] hydrate initiator and an NH 4OH/NH 4Cl pH buffer. The pH buffer was used to control the electric surface potential of particles to maintain a stable dispersion of particles and to prevent generation of new particles during the polymerization. Addition of monomer to the reaction system during polymerization could enlarge the average size of polymer particles to 5.7 μm with a coefficient of variation of 1.5%, which is much less than the standard criteria of monodispersity, 10%.

本文言語English
ページ(範囲)249-252
ページ数4
ジャーナルJournal of Colloid And Interface Science
281
1
DOI
出版ステータスPublished - 2005 1月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 表面、皮膜および薄膜
  • コロイド化学および表面化学

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