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5 marksMacromolecules

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

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

State TWO chemicals that could be used in the depolymerization of PET and explain the chemical process occurring.

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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)(i)Suggest the meaning of the term 'depolymerization'.[1 mark]
  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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