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discuss the similarities and differences between suspension and emulsion free radical polymerization including advantages and disadvantages...

discuss the similarities and differences between suspension and emulsion free radical polymerization including advantages and disadvantages of each?

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Answer #1

Emulsion polymerization is a chemical process and you need a surfactant to get the monomer emulsify.

You need: a water soluble initiator, a chemical emulsifier, an insoluble (or slightly soluble) monomer in water.

The advantage is: better heat control, the emulsion size is 0.05 - 5 microns.

The disadvantage is: the surfctant is a soap and contaminates the polymer.

Suspension polymerization is a mechanical process and you need a stabilizing agent.

The advantage is: better heat control and the separation is much easier.

The disadvantage is that few monomers are water soluble.

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