Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Preparation of $CaSO_4$ Nanoparticles by Catanionic Vesicles Formed in Cationic OTAC and Anionic ADS Mixed Aqueous Solution

양이온 OTAC와 음이온ADS 혼합 수용액에서 형성된 층막구형체에 의한 $CaSO_4$ 나노입자의 제조

  • Kim, Hong-Un (Department of Applied Chemistry, Dongyang Technical College) ;
  • Lim, Kyung-Hee (Department of Chemical Engineering, Chung-Ang University)
  • 김홍운 (동양공업전문대학 응용화학과) ;
  • 임경희 (중앙대학교 공과대학 화학공학과)
  • Published : 2004.12.31
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Abstract

The preparation of $CaSO_4$ nanoparticle by vesicles formed spontaneously in cationic OTAC and anionic ADS mixed surfactant solution whose ratio is 0.3/0.7 is investigated. Added electrolytes for preparing nanoparticles reduce vesicle size about 200-300 nm comparing with that of pure vesicle whose size is 700-800 nm by DLS. The core of vesicles has 200 nm size and acts as nanoreactors which same size of monodisperse $CaSO_4$ nanopaticles are formed. Although $CaSO_4$ particles are formed at the outer of vesicles, they are very large and amorphous. The formed particles are identified with XRD analysis after separation due to coinciding with $CaSO_4$ particles.

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References

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