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What is a polymer?

What is a polymer?. Polymers that you know…. Polyethylene. Poly(vinyl chloride). Polystyrene. Polycarbonate. Polyurethane. Polyacrylamide. earth911.comhttp://earth911.com/recycling/plastic/pvc/ (accesssed date:June 21,2010).

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What is a polymer?

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  1. What is a polymer?

  2. Polymers that you know…. Polyethylene Poly(vinyl chloride) Polystyrene Polycarbonate Polyurethane Polyacrylamide earth911.comhttp://earth911.com/recycling/plastic/pvc/ (accesssed date:June 21,2010) http://reusablebags.typepad.com/photos/uncategorized/2008/01/16/nalgene_bottles.jpg (accessed date: June 21,2010). http://hanshaupt.files.wordpress.com/2009/06/soft-contact-lens.jpg (accessed date: June 21,2010) http://mypatiofarm.files.wordpress.com/2009/05/coke_2litre_bottles2.jpg (accessed date: June 21,2010) Catering Hygiene http://www.slsonline.co.uk/showdetails.asp?id=2148 (accessed date: June 21,2010) chemicals-technology.com http://www.chemicals-technology.com/projects/BASF-HPPO/BASF-HPPO2.html (accessed date: June 21,2010)

  3. But what is a polymer…. B A

  4. Polymers that you know…. Polyethylene Poly(vinyl chloride) Polystyrene Polycarbonate Polyurethane Polyacrylamide Polystyrene

  5. Polyurethane Polyurethane (inner) Polyethylene terephthalate (outer) Polytetrafluoroethylene Poly(vinyl chloride) Polymers in medical devices

  6. Silly Putty experiment Vinyl alcoholMonomer Tetrahydroxyborate anion Cross-Linking Agent • Linkers that chemical bond polymer chain together • Basic building block for polymer synthesis Poly(vinyl alcohol) Polymer

  7. How does a cross-linker work?

  8. No Cross-links With Cross-links Cross-linker affect on material properties • No chains linked together • Larger range of motion available to some chains more bouncy • More chains linked together • Increasing stiffness • Less range of motion available  rigid and stiff

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