Abstract
Polymerization rate is faster early in the reaction than at later stages. The two rates intersect at the critical micelle concentration (CMC) of the oleate soap emulsifier. Final particle size of the latex can be calculated during polymerization from this measure of the percent conver sion at the CMC molecule. Thus, the opportunity is provided for latex particle size control. The effect on latex particle size of several variables in the system was evaluated. Increasing the concentration of the redox com ponent in the initiator increased particle size. Increasing the concentration of the peroxide or adding other agents capable of decomposing to free radicals reduced latex particle size. Reducing the emulsifier concentration increased the particle size.
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