양이온 OTAC와 음이온ADS 혼합 수용액에서 형성된 층막구형체에 의한 CaSO4 나노입자의 제조

Preparation of CaSO4 Nanoparticles by Catanionic Vesicles Formed in Cationic OTAC and Anionic ADS Mixed Aqueous Solution

The preparation of CaSO4 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 CaSO4 nanopaticles are formed. Although CaSO4 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 CaSO4 particles.