Synthesis and application of poly(butadiene-g-acrylonitrile–styrene) core–shell rubber particles for use in epoxy resin toughening. I. Synthesis of poly(butadiene-g-acrylonitrile–styrene)
✍ Scribed by Sungkyun Sohn; Sungtae Kim; Sung Il Hong
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 409 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
Graft copolymers of acrylonitrile (AN)-styrene (ST) onto polybutadiene were prepared via emulsion polymerization method using a redox initiator system, cumene hydroperoxidetetrasodium pyrophosphate-ferrous sulfate-dextrose. The effects of initiator, reaction temperature, reaction time, polymer/grafting monomer ratio, and monomer dropping frequency on the graft copolymerization reaction were investigated. Transmission electron micrographs confirmed that the synthesized particles had a core-shell shaped structure. The powdery core-shell shaped poly(butadiene-g-AN-ST) particles with various AN contents in their shells and with different shell thicknesses were prepared, which can be incorporated into brittle epoxy resin as impact modifier.