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Addition Polymers

AQA AS-level ChemistryAlkenesLesson 18 of 23

Alkenes and substituted alkenes can join together in very large numbers to form addition polymers. The small molecules are monomers, and each must contain a C=C bond. During polymerisation the π bond of each monomer breaks and new C–C single bonds link the monomers into a long chain. No other product is formed.

n CH2=CH2 → –[CH2–CH2]n–
Diagram

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