outline the use of alkenes in the manufacture of margarine by catalytic hydrogenation of unsaturated...
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• Outline the use of alkenes in the manufacture of margarine by catalytic hydrogenation of unsaturated vegetable oils.
• Outline the use of alkenes in the formation of a range of polymers using unsaturated monomer units.
Week 16
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Alkene molecules form addition polymers
Week 16
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• Describe the addition polymerisation of alkenes.
• Deduce the repeat unit of an addition polymer obtained from a given monomer.
• Identify the monomer that would produce a given section of an addition polymer.
Week 16
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General equation for addition polymerisation
Week 16
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Formation of poly(ethene)
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Formation of poly(propene)
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Formation of poly(chloroethene) PVC
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Formation of poly(phenylethene) (polystyrene)
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Poly(tetrafluoroethene) (Teflon or PTFE)
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Orlon
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• Describe some of the uses for certain polymers.
• Outline how waste polymers are recycled, separated and processed.
Week 16
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• Explain how polymers undergo combustion for energy production.
• Explain how polymers are used as a feedstock in cracking for producing plastics and other chemicals.
• Outline the role of chemists in minimising environmental damage by removal of toxic waste and development of biodegradable and compostable polymers.
Week 16
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Lactic acid is now used to make compostable polymers
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