Polyamides

Question 1

Examples of condensation polymerisation

Answer 1

Polyesters
Polyamides
Polypeptides

Question 2

Polyamides is made from

Answer 2

DiCarboxylic acids + diamines (2 NH2 groups)

Question 3

Polypeptide is made from

Answer 3

Amino acids

Question 4

How to draw the repeat unit of a condensation polymer

Answer 4

Find the amide/peptide/ ester link
Take a H and OH off each molecule
Draw square brackets around
Have bonds from each end that extend out of the square brackets

Question 5

Polyamides link name

Answer 5

Amide link

Question 6

Polypeptide link name

Answer 6

Peptide bond

Question 7

What does condensation of diamine + carboxylic acid release?

Answer 7

H2O molecules

Question 8

Acid Hydrolysis of polyamide

Answer 8

Releases dicarboxylic acid
And dialkylammonium ion(NH3+ on both ends)

Question 9

Alkali hydrolysis of polyamide

Answer 9

Releases diarboxylate ion
And diamine

Question 10

Why are polyamides biodegradable?

Answer 10

Can be hydrolysed by breaking amide link to release monomers

Question 11

Intermolecular forces between polyamides

Answer 11

Hydrogen bonds
Permanent dipole-dipole interactions
London forces