these stirring conditions, the number of Рpolymer particles was the same as that obtained in the experiments at 410 Рand 600 rpm, as shown in Figure 9. Therefore, the decrease in reaction Рrates could not be ascribed to the reduction of NTc. By visual inspection, Рthe monomer was seen to be perfectly dispersed at stirring speeds greater Рthan 410 rprn as long as some monomer droplets remained. At a stirring Рspeed of 200 rpm, the emulsified monomer droplets started to separate from Рthe emulsion phase at about XM = 0.07. The monomer conversion was Р0.035 when the micelles disappeared at these experimental conditi~ns.~ РMonomer separation occurred after the disappearance of the micelles, and Р Fig. 10. Effect of stirring on particle size distributionwith per cent conversion as Р parameter.
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