Question

Explain why the preparation of Nylon- 6,10 occurs under milder conditions when decanedioyl dichloride is used instead of decanedioic acid.

Answer 1

The monomers of nylon are-A six-carbon diamine (1 ,6-hexanediamine) and a ten-carbon dicarboxylic acid (decanedioic acid).the amine and carboxylate functional groups condense to form amide bonds only at relatively very high temperatures which is not possible in laboratory conditions. So, to make this reaction take place under very mild conditions in lab, a monomer with more reactive functional group than a carboxylic acid is preferred. Acyl chlorides are far more reactive than carboxylic acid, so diacyl chloride or (decanedioyl chloride) is used.