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Polymerisation

OCR A-level Organic ChemistryReactions and Reactive SpeciesLesson 20 of 20

A polymer is a very long molecule made of many small repeating molecules called monomers. Polymerisation is the process that joins the monomers together.

In addition polymerisation, monomers with a C=C double bond join together and nothing else is produced. Ethene forms poly(ethene), and the polymer is shown by its repeat unit.

Diagram

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