CAIE A Level Chemistry 9701 · Polymerisation

Polymerisation: suggest question

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A polyamide is produced by heating a single monomer, compound X, which contains both an amine group and a carboxylic acid group. A short section of the polymer chain is:

−NH−CO−CHX2−CHX2−CHX2−NH−CO−CHX2−CHX2−CHX2X−\ce{-NH-CO-CH2-CH2-CH2-NH-CO-CH2-CH2-CH2-}

Suggest the structure of compound X, and explain why this is a condensation polymer rather than an addition polymer.

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