Morphological control of calcium carbonate crystallized in reverse micelle system with anionic surfactants SDS and AOT

Hoon Kang Sung, Izumi Hirasawa, Woo Sik Kim*, Kyun Choi Chang

*この研究の対応する著者

研究成果: Article査読

52 被引用数 (Scopus)

抄録

The influence of a surfactant over water on the polymorphism and crystal size of calcium carbonate produced by reaction crystallization in microemulsion systems was investigated in a mixing tank reactor. The crystallization was induced by the reaction between two aqueous micelle solutions (Na 2CO3-CaCl2) stabilized by anionic surfactants, SDS (sodium dodecyl sulfate) or AOT (sodium bis(2-ethylhexyl) sulfosuccinate). With increasing surfactant ratio to water, the water-in-oil microemulsion was stably developed and the morphology of the calcium carbonate crystallized in the micelles sharply transformed from calcite to vaterite. The influence of SDS on the polymorphism and crystal size of calcium carbonate was much clearer than that of AOT. In addition, with AOT, certain step changes in the morphology and crystal size occurred around a surfactant ratio to water (R=[H 2O]/[surfactant]) of 15 due to a two-phase separation of the microemulsion.

本文言語English
ページ(範囲)496-502
ページ数7
ジャーナルJournal of Colloid And Interface Science
288
2
DOI
出版ステータスPublished - 2005 8 15

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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