Question:
Write the reactions for the formation of nylon 6,6 polymer.
Write the reactions for the formation of nylon 6,6 polymer.
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Nylon 6,6 involves condensation of a diamine and a dicarboxylic acid, forming repeating amide linkages.
Updated On: Nov 6, 2025
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Solution and Explanation
Nylon 6,6 is a polyamide formed by condensation polymerization of hexamethylenediamine (\( \chemfig{H_2N-(CH_2)_6-NH_2} \)) and adipic acid (\( \chemfig{HOOC-(CH_2)_4-COOH} \)).
\[ n\chemfig{H_2N-(CH_2)_6-NH_2} + n \chemfig{HOOC-(CH_2)_4-COOH} \to \chemfig{[-NH-(CH_2)_6-NH-CO-(CH_2)_4-CO-]_n} + 2n \chemfig{H_2O}. \] The reaction forms amide bonds, releasing water molecules.
\[ n\chemfig{H_2N-(CH_2)_6-NH_2} + n \chemfig{HOOC-(CH_2)_4-COOH} \to \chemfig{[-NH-(CH_2)_6-NH-CO-(CH_2)_4-CO-]_n} + 2n \chemfig{H_2O}. \] The reaction forms amide bonds, releasing water molecules.
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