Editing Emulsion polymerization (section)

===Comonomers===
[[Copolymerization]] is common in emulsion polymerization. The same rules and [[comonomer]] pairs that exist in [[radical polymerization]] operate in emulsion polymerization. However, copolymerization kinetics are greatly influenced by the [[aqueous]] [[solubility]] of the monomers. Monomers with greater aqueous solubility will tend to [[liquid-liquid extraction|partition]] in the aqueous phase and not in the polymer particle. They will not get incorporated as readily in the polymer chain as monomers with lower aqueous solubility. This can be avoided by a programmed addition of monomer using a semi-batch process.

Ethene and other alkenes are used as minor comonomers in emulsion polymerization, notably in [[vinyl acetate]] copolymers.

Small amounts of [[acrylic acid]] or other [[ionizable]] monomers are sometimes used to confer colloidal stability to a dispersion.