| 초록 |
Polyacrylonitrile nanoparticles in sizes ranging from approximately 100 to 500 nm were prepared by emulsion polymerization of acrylonitrile in a continuous aqueous phase in the presence of potassium persulfate as initiator and sulfonate surfactants. The influence of various polymerization parameters (e.g., concentration of monomer and initiator, type and concentration of surfactant and solvent, temperature and time of polymerization) on the properties (e.g., size and size distribution, yield, stability, etc.) of the particles has been investigated. The polymerization of acrylonitrile can occur within the surfactant micelles. A discussion concerning the role of this mechanism under different conditions, including comparison with previous literature, is also presented. Surface and bulk characterizations of the particles were performed by methods such as scanning electron microscopy(SEM), Fourier transform-infrared(FT-IR) spectroscopy, and nuclear magnetic resonance(NMR). |
