Production of micron-sized monodispersed polymer particles by seeded polymerization for the dispersion of highly monomer-swollen particles prepared with submicron-sized polymer seed particles utilizing the dynamic swelling method

✍ Scribed by M. Okubo; E. Ise; T. Yamashita

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 205 KB
• Volume: 36
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(199810)36:14<2513::aid-pola10>3.0.co;2-l

✦ Synopsis

For the purpose of extending the size range of polymer seed particles used in "dynamic swelling method" (DSM), first it was verified theoretically that the submicron-sized polymer particles produced by emulsion polymerization can also absorb a large amount of monomer by DSM in both equilibrium and kinetic control states. Next, on the basis of the theoretical results, experimentally about 2.6 m-sized styreneswollen polystyrene (PS) particles were prepared utilizing DSM in the presence of 0.64 m-sized monodispersed PS seed particles produced by emulsifier-free emulsion polymerization. Moreover, 2.5 m-sized monodispersed PS particles were produced by the addition of cupric chloride as a water-soluble inhibitor to depress the by-production of submicron-sized PS particles in the seeded polymerization at 30°C with 2,2Ј-azobis(4methoxy-2,4-dimethylvaleronitrile) initiator.