Question

Question: What polyester or polyamide can be prepared from each pair of monomers?

a.

b.

Short answer

Answer

a.

Polymerization of monomer a

b.

Polymerization of monomer b

Step-by-step solution

Step-by-Step Solution Step 1: Polymerization reactions

Reactions that synthesize polymers from monomer units are called polymerization reactions.

Polymerization reactions can synthesize polymer chains or 3-dimensional polymer networks.

The reactivity depends on the electronic and steric factors of the polymer.

When the polymer is formed from a single monomer, it is called a homopolymer, and if the monomers are different, it is called a copolymer.

Copolymers

Polymerization reactions leading to the formation of copolymers are called copolymerization reactions.

Polymers containing two types of monomers are bipolymers.

Copolymers are further classified into different types based on the arrangement of monomers in the polymer chain.

The most common is an alternating copolymer in which the monomers are alternated in the chain.

Polymerization of the given monomers

a. The given monomers are 1,4-cyclohexane diol and 1,4-butanedioic acid.

The carboxyl groups and hydroxyl groups in monomers react to form a continuous polymer chain with ester linkages. Therefore, the polymer is a polyester.

Polymerization of monomer a

b. The given monomers are 1,4-benzenedicarbonyl dichloride and 1,4-diaminobutane.

The acid chloride groups and amine groups in the monomers react to form a polymer chain with amide linkages. Therefore, the polymer is a polyamide.

Polymerization of monomer b