Emulsion Polymerization and Isolation Technology

A comprehensive description of emulsion polymerization chemistry can be found in books written by Gilbert [12] and Lovell and El-Aasser [13] and Blackley [14]. Although the process appears straightforward, the technology is extremely complicated. Several possible polymerization loci can be present simultaneously including the aqueous phase, micelles, monomer droplets, partide-water interface, and latex particles. Emulsion polymerization techniques are in wide commerdal use because of their many advantages however, the process is not without its drawbacks. The major advantages include  

A core-shell impact modifier is probably the best model to illustrate the utility of emulsion polymerization technology. The core polymer is based on a low glass transition temperature (Tg) mbber and is surrounded by a hard polymeric shell (high Tg material). The core rubber is made in the first stage of the emulsion polymerization. 

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