Emulsioonpolümerisatsiooniga

Emulsioonpolümerisatsiooniga is a polymerization process where monomers are dispersed in a continuous phase, typically water, using a surfactant to form an emulsion. This emulsion consists of tiny monomer droplets stabilized by surfactant molecules. The polymerization reaction is initiated in the aqueous phase, often by water-soluble initiators like persulfates. The growing polymer radicals then migrate into the monomer-swollen surfactant micelles, where the majority of the polymerization occurs. This leads to the formation of polymer particles dispersed within the aqueous medium. The process is characterized by the formation of a latex, which is a stable dispersion of polymer particles. Key advantages include good heat control due to the high heat capacity of water, the ability to achieve high molecular weights, and the direct production of a polymer dispersion that can often be used without further purification. Common applications include the production of paints, adhesives, synthetic rubbers, and various plastics. The rate of polymerization and the properties of the resulting polymer are influenced by factors such as the type and concentration of surfactant and initiator, temperature, and monomer solubility.