5 - Condensation Polymerisation - Polyamides

Question 1

How can Polyamides be made?

Answer 1

Polyamides are condensation polymers that can be made frorm either two different types of monomer units or just one type of monomer unit.

Question 2

What are the monomers of Polyamides?

Answer 2

The monomers of polyamies have a carboxyl group, -COOH and an amine group - NH2.

Question 3

What are examples of Polyamides?

Answer 3

Nylon-6,6, Kevlar and Proteins are all Polyamides.

Question 4

How are Polyamides made?

Answer 4

There are two types of Polyamide (the same as Polyesters). Polyamides can be made by reacting different monmer units: Dicarboxylic acids and diamines. They can also be made by reacting one type of monomerunti containing -COOH and -NH2 groups - Amino acids are formed in this way.

Question 5

What are the monomers of Nylon-6,6?

Answer 5

The monomers 1,6-diaminohexane and hexane-1,4-dioc acid.

Question 6

What happens when Nylon-6,6 forms?

Answer 6

When Nylon-6,6 forms a bond forms between the amine group on a diamine and a carboxyl group on a carboxylic acid. An amide linkage forms, and water is eliminated.

Question 7

How is kevlar formed?

Answer 7

Kevlar is formed from the polymerisation of benzene-1,4-diamine and Benzene-1,4-dicarboxylic acid.