Fabrication and Processing of Engineering Materials - Polymerization - Addition Polymerization

3 important questions on Fabrication and Processing of Engineering Materials - Polymerization - Addition Polymerization

Describe the initiation stage in addition polymerization.

An active center is formed by reaction between an initiator and a monomer unit.
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Describe the propagation stage in addition polymerization.

By addition of multiple monomer units the chain grows. This is the propagation stage.
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In what two ways can the propagation end?

- The active ends of two propagation chains may react and form one chain. This is also called combination.
- Two propagation chains may form two dead chains. This is called disproportionation.
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