Abstract

Using a blend of anionic and nonionic surfactants, the emulsion polymerization of n-butyl acry late was conducted at 50°C. The total particle surface area per cm2 of aqueous solution (TS) at 90% conversion was found to be proportional to the amount of surfactant (E) used in the single-surfactant systems. A relationship close to additive exists between the TS value and the E of each surfactant used. For most of the recipes, the latex particles were uniform throughout the polymerization. However, in some recipes, the particle number varied during the polymerization.

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