| 초록 |
Microwave energy was applied to emulsion polymerization and styrenic and acrylic polymer nanoparticles were obtained in the presence of an initiator, a surfactant and a chain transfer agent. Molecular weight, molecular weight distribution, particle size, particle size distribution and conversion were investigated by changing the monomer types, reaction temperature and the contents of initiator and surfactant. Polymerization rate by microwave irradiation was considerably increased, compared to conventional heating(without microwave irradiation) and reaction rates were highly affected by the dipole moment of monomers. Characteristics of prepared nanoparticles were evaluated by fourier transform infrared spectroscopy(FT-IR). Morphologies of the particles were investigated by scanning electron microscopy(SEM). |
