Year 12 Chemistry
Activity 9.2.A.1 – Comparing free radical and catalytic addition polymerisation
Module
9.2 – Production of Materials
Topic
9.2.A – Synthetic Polymers
Name
Question 1 - Free Radical Polymerisation
Label the diagram by identifying the things or processes inside the red boxes.
Date
Question 2 – Catalytic Polymerisation
Put numbers in the boxes on the right to put each of the steps into the correct order.
Step
Order
An ethene monomer adds to one of the alkyl groups in the aluminium
trimethyl (Al(CH3)) complex
Chain growth is terminated with an alkyl group
Titanium tetrachloride (TiCl4) is mixed with aluminium trimethyl (Al(CH3))
Chain growth continues through the successive addition of ethene
monomers without branching
Titanium tetrachloride (TiCl4) and aluminium trimethyl (Al(CH3)) form an
insoluble complex known as a Ziegler-Natta catalyst
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