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- W2085026005 abstract "Three different emulsifier types from vinyl acetate monomer and methoxypolyoxyethylene (35: 65, 27: 73 and 19: 81wt: wt%) were prepared in the presence of benzoyl peroxide using a macroradical initiator technique. Fourier transform infrared spectroscopy and 1 H nuclear magnetic resonance were carried out to confirm the structure of the copolymers obtained (emulsifiers). The emulsion polymerization of vinyl acetate initiated by sodium persulphate as an initiator in the presence of non-ionic (polyoxyethylene (POE) type) emulsifier has been kinetically investigated. The rate of polymerization was found to be proportional to the 0.33, 0.40 and 0.44 power of the emulsifier concentration and to the 0.71, 0.79 and 0.87 power of the initiator concentration. The apparent activation energy was found to be 135, 56.5 and 38kJ mol -1 for 65 wt%, 73 wt% and 81 wt% POE, respectively. The particle size was observed to increase with increasing initiator concentration and to decrease with increasing emulsifier concentration. The reaction order with respect to the emulsifier concentration (number of particles versus emulsifier concentration) was found to be 0.10, 2.05 and 0.89 for 65 wt%, 73 wt% and 81 wt% POE, respectively." @default.
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- W2085026005 date "1997-12-01" @default.
- W2085026005 modified "2023-09-27" @default.
- W2085026005 title "Effect of polyoxyethylene emulsifier composition on the course of emulsion polymerization of vinyl acetate" @default.
- W2085026005 doi "https://doi.org/10.1002/(sici)1097-0126(199712)44:4<413::aid-pi817>3.0.co;2-x" @default.
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