3.3.12 - Polymerisation

Question 1

Formation of condensation polymers

Answer 1

Form when a water molecule is removed from the species of a reaction

Question 2

Polyamides

Answer 2

Formed in a reaction between dicarboxylic acids and a diamine. A molecule of water is removed, leaving an amine linkage

Question 3

Polyamide examples

Answer 3

Nylon-6,6,
Kevlar

Question 4

Polyesters

Answer 4

Formed in a reaction between dicarboxylic acids and a diol, producing an ester linkage

Question 5

Polyester example

Answer 5

Terylene

Question 6

Polypeptides

Answer 6

Formed from multiple amino acids. A single monomer can produce a polymer due to the presence of both a -NH and -OH group

Question 7

Hydrolysis

Answer 7

Condensation polymers can be broken down back into the constituent molecules by the addition of H2O. Water is attracted to the polar regions of the polymer meaning the links can be broken down

Question 8

Condensation polymers bonding

Answer 8

Contain polar bonds. Hydrogen bonds and dipoles can also form between separate polymer chains

Question 9

Condensation polymers uses

Answer 9

Bulletproof vests, heat protective materials

Question 10

Breaking down of polyalkanes

Answer 10

Have to be broken down by burning which produces harmful products such as SO2 or CO2, which can lead to acid rain

Question 11

Breaking down of polyesters and polyamides

Answer 11

Can be broken down through hydrolysis due to the polarity within the polymer molecules