POLY 174 |
| Amphiphilic copolymer was prepared by grafting methoxy poly (ethylene glycol) (MPEG) onto copolymers of maleic anhydride and styrene(SMA). The kinetics of styrene emulsion polymerization stabilized by SMA-g-MPEG was studied. The effects of the amount of initiator, surfactant and the reaction temperature on the kinetics of the emulsion polymerization were investigated. The results show that the polymerization rate (RP) increased with increasing graft copolymer concentration, initiator concentration and temperature. When AIBN was used as the initiator, RP and NP was proportional to the 0.36 and 0.55 power of the surfactant concentration, respectively. When KPS was used as the initiator, RP and NP was proportional to the 0.98 and 0.99 power of surfactant concentration, respectively. The deviation may attribute to the less effective in stabilizing the system because of their relatively low diffusion capability in the reaction system. |
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General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Polymer Chemistry |