Polyesters

Question 1

Describe addition polymerisation

Answer 1

A monomer can be combined with many molecules to form long chains.

Question 2

Describe how you draw addition polymers

Answer 2

Repeating unit is drawn in the brackets with the two end bonds extending out
The number of repeating units is written in small at the bottom right outside the brackets

Question 3

Practice drawing of addition polymer

Answer 3

On OneNote

Question 4

Differences between addition and condensation polymerisation:

Answer 4

• In condensation each time 2 monomers join another small molecule is formed - usually water or HCl.
• Usually in condensation polymerisation it is 2 different monomers reacting together

Question 5

Polyesters - what do monomers have to have at each end

Answer 5

2 reactive groups
One at each end - therefore diol HO-R-OH

Question 6

What are the main monomers in a polyester

Answer 6

Carboxylic acids
Alcohols

Question 7

What is produced in the reaction to form a polyester
What does it form from

Answer 7

H2O
The H from the alcohol reacts with the OH from the carboxylic acid

Question 8

How do you draw polyesters

Answer 8

Same as addition polymerisation

Question 9

Practice drawing polyesters

Answer 9

On one note