Model Filled Polymers versus Synthesis of Crosslinked MonodispersePolymethacrylate Beads

摘要

Monodisperse polymethacrylate beads of varied size and crosslink density areprepared by emulsion copolymerization of methacrylate and divinyl monomers in the absence of emulsifiers. The sizes of polybutyl and polyethyl methacrylate beads decreased with increasing polymerization temperature, while polymethyl methacrylate beads were largely unchanged in size. The molar mass of polymer in polymethyl methacrylate beads markedly exceeded that in polystyrene beads. The rate of polymerization increased, and bead size decreased, with increasing initiator concentration or decreasing monomer concentration. The polymethacrylate beads are used as filler particles in polymer composites. Keywords: Polymer beads; Crosslinked monodisperse beads; Polymethacrylates; Filled polymers. (JS)