Microsphere Synthesis by Dispersion Copolymerization Using Poly(t-butyl methacrylate) Macromonomers in Nanqueous Media

摘要

Polymer microspheres were synthesized by dispersion copolymerization of divinylbenzene (DVB) with vinylbenzyl-terminated poly (t-butyl methacrylate) (PBMA) macromonomers in nonaqeous media (methanol and acetonitrile). The particle diameter increased gradually withanincrase of the DVB concnetration inmethanol or acetonitrile. The particle size distribution was very narrow. PBMA macromonomers acted not only as a comonomer but also as a stabilizer. The particle diameters obtained in acetonitrile were smaller than those obtained inmtanol. Thus, we observed a tendency inwhich the more soluble for PBMA macromonomer the media became, the smaller the particle size became.