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Miniemulsion Polymerization of Poly(vinyl acetate) Nanoparticles Stabilized by Hexadecane  

박수진 (한국화학연구원 화학소재연구부)
김기석 (한국화학연구원 화학소재연구부)
Publication Information
Polymer(Korea) / v.28, no.1, 2004 , pp. 10-17 More about this Journal
Abstract
Poly(vinyl acetate) (PVAc) nanoparticles were synthesized in oil/water miniemulsion polymerization in the presence of low amount of hexadecane as a cosurfactant. The nanoparticles were tested to apply as a drug carrier. The shape of nanoparticles was observed by scanning electron microscopy, and the average particle size and size distribution were examined by particle size analyzer. Inclusion of antibiotic drugs into the nanoparticles was confirmed by CHO, C=O, and OH peak of FT-IR. Size of the nanoparticles were adjusted between 80∼300 nm by changing the homogenization rate and amount of cosurfactant and surfactant. The monomer droplets prepared by miniemulsion method using a cosurfactant were homogeneous and stable compared with those prepared by conventional emulsion polymerization. This might be occurred due to the prevention of Ostwald ripening and coalescence between droplets by using hexadecane as a cosurfactant.
Keywords
miniemulsion polymerization; vinyl acetate; cosurfactant; homogenization; Ostwald ripening;
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