PRODUCTION OF MICRON SIZED MONODISPERSED COMPOSITE POLYMER PARTICLES BY SEEDED POLYMERIZATION UTILIZING THE DYNAMIC SWELLING METHOD

摘要

In order to develop the seeded polymerization technique utilizing the dynamic swelling method (DSM) proposed by authors for the production of micron-sized monodispersed ''composite'' polymer particles consisting of two kinds of polymers, the seeded polymerization for the dispersion of ethyl methacrylate (EMA)-swollen PS particles prepared utilizing DSM was carried out. Monodispersed PS/poly(ethyl methacrylate) (PEMA) composite particles having 7 mu m in diameter were produced by the addition of NaCl to lower the solubility of EMA in medium and by the addition of CuCl2 as a water-soluble inhibitor to depress the by-production of submicron-sized PEMA particles. [References: 14]