15.2 addition polymerisation

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6 Terms

1
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define an addition reaction

alkenes undergo addition reactions with themselves to produce long chains, addition polymers

2
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what happens during an addition reaction

unsaturated molecule becomes saturated polymer bc double bonds break to form w/ neighbouring alkene

3
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what are properties of polythene

non-polar and only has dispersion forces. strong enough to be solid at room temperature.

4
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explain HDPE (high density polythene)

low degree of branching & hence has relatively strong dispersion forces between polymer chain, making it more harder, dense and more rigid

5
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explain LDPE

has a high degree of branching and weaker dispersion forces between polymer chains, making it less dense and more flexible

6
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what are the forces between a polymer made up of polar monomers

chains are held by stronger, polar forces