초록 |
Copolymer emulsions of methylmethacrylate (MMA), butyl acrylate (BA) and vinyltrisopropoxysilane were prepared by a seeded semicontinous polymerization in the presence of a redox initiator, ammonium persulfate and sodium hydrosulfate. The particles size and size distribution were determined by Dynamics Laser Scattering (DLS). The mean diameter of the particles decreased with an increase in the vinyltrisopropoxysilane monomer ratio, but it increased with an increase in the concentration of the radox initiator. |