A synthetic fiber is produced by reacting adipic acid with hexamethylenediamine. What specific functional group links the repeating units in this polymer?
Q1. A synthetic fiber is produced by reacting adipic acid with hexamethylenediamine. What specific functional group links the repeating units in this polymer?
Answer: Amide linkage
Explanation: Nylon-6,6 contains amide linkages formed between carboxylic acid and amine groups. Terylene is tempting but contains ester linkages from alcohol groups.