Outline the use of alkenes in the manufacture of margarine by catalytic hydrogenation of unsaturated...

• 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

© Pearson Education Ltd 2008This document may have been altered from the original

Alkene molecules form addition polymers

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

• 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

© Pearson Education Ltd 2008This document may have been altered from the original

General equation for addition polymerisation

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Formation of poly(ethene)

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Formation of poly(propene)

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Formation of poly(chloroethene) PVC

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Formation of poly(phenylethene) (polystyrene)

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Poly(tetrafluoroethene) (Teflon or PTFE)

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

Orlon

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

• Describe some of the uses for certain polymers.

• Outline how waste polymers are recycled, separated and processed.

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original

• 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

© Pearson Education Ltd 2008This document may have been altered from the original

Lactic acid is now used to make compostable polymers

Week 16

© Pearson Education Ltd 2008This document may have been altered from the original