Addition Polymerization
Visualize how monomers join to form long-chain polymers
Monomer Units:
Ethene
Monomer Structure
Polymer (Repeat Unit)
Chemical Equation
n
Addition polymerization: the C=C double bond breaks and monomers link by single bonds to form a long-chain polymer. No small-molecule by-product is formed.
Select Polymer
Common Uses
- Plastic bags
- Squeeze bottles
Environmental Issues
- Non-biodegradable: Do not break down easily, causing pollution.
- Harmful gases on combustion: e.g. PVC releases hydrogen chloride (HCl), a toxic and acidic gas that causes acid rain.
- Burning PS can release toxic fumes and dense black smoke (unburnt carbon soot).