Question

Draw the structures of Quiana and Nomex, two commercially available step-growth polymers formed from the given monomers. Nomex is a strong polymer used in aircraft tires and microwave transformers. Quiana has been used to make wrinkle-resistant fabrics.

(a.)

(b.)

Short answer

Answer

Quiana(a.)

Nomex(b.)

Step-by-step solution

Quiana

The polymer Quiana appears as a silky nylon fiber. It has amide bonds due to the reaction of monomers with carboxylic acid and amine groups.

The formation of Quiana polymer from its monomers in stepwise polymerization is as shown:

Quiana

Nomex

The polymer Nomexis a fire-resistant fiber made from isopthaloyl dichloride and benzene-1,3-diamine. It is related to the fiber nylon as well.

The formation of Nomex polymer from its monomers in stepwise polymerization is as shown:

Nomex