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New and Useful Polymers

New and Useful Polymers. Why are polymers used for their properties? Designing polymers to do a job. Properties of plastics . Making a hiking jacket using a new polymer What qualities would the polymer need to produce an effective jacket?. Chicken or egg?.

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New and Useful Polymers

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  1. New and Useful Polymers Why are polymers used for their properties? Designing polymers to do a job.

  2. Properties of plastics • Making a hiking jacket using a new polymer • What qualities would the polymer need to produce an effective jacket?

  3. Chicken or egg? • Polymers sometimes used because of their properties • Polymers designed to have certain properties

  4. Polyethylene terephthalate • PET – Used to make drinks bottles • Rigid and lightweight • Transparent • Good barrier to moisture

  5. Which properties make PET ideal for drinks bottles and why?

  6. Designer polymers • Chemists can design polymers with the use in mind • Guaranteed to have the correct properties

  7. Or Kevlar – ”5 times stronger than steel” Extremely strong – resistant to high impact and abrasion Very light Bulletproof armour Motorbike gear Rope and cable Sports equipment Poly paraphenylene terephthalamide

  8. Testing polymers • Design a new hiking jacket • Wearing • Wind resistance • Water permeability • Flexibility • Which material would be most suitable?

  9. Designer polymers

  10. What is meant by the term ‘designer polymer’?

  11. Homework • Biodegradable plastics • What are they made from? • How are they broken down? • What are they used for?

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