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1 markMacromolecules

CAPE Chemistry Unit 2 · 2006 · Paper 2 · Question 8(b)(i)

Chemical methods of degradation have been developed to depolymerize waste polymers.

Suggest the meaning of the term 'depolymerization'.

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Other parts of this question

  1. 8(a)Give ONE use for EACH of PVC and PET and suggest why these polymers do not respond to natural degradative processes.[4 marks]
  2. 8(b)(ii)State TWO chemicals that could be used in the depolymerization of PET and explain the chemical process occurring.[5 marks]
  3. 8(c)(i)What would be a suitable solvent for this process?[1 mark]
  4. 8(c)(ii)Suggest a reason for the use of fine chips.[1 mark]
  5. 8(c)(iii)Give TWO safety precautions that should be enforced during this recycling process.[2 marks]
  6. 8(c)(iv)Suggest a use or property of any clothing produced from these recycled fibres.[1 mark]
  7. 8(d)Discuss the advantages and disadvantages of disposing of PVC material via incineration.[5 marks]

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