8.7.1 Kevlar 8.7 Specialised Polymers

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Presentation transcript:

8.7.1 Kevlar 8.7 Specialised Polymers LO: I understand how the uses of kevlar are related to its properties

The linear chains of kevlar are held together by bonding. Kevlar is a . polyamide The linear chains of kevlar are held together by bonding. hydrogen Properties: Uses: light weight bullet-proof vests strong crash helmets durable spacesuits LO: I understand how the uses of kevlar are related to its properties

8.7.2 Polyethenol LO: I understand how the properties of polyethenol relate to its uses.

Polyethenol is a polymer water soluble The solubility of polyethenol can be varied by changing the number of groups present. hydroxyl ester exchange This happens in a process called . . ester exchange Uses of polyethenol: surgical stitches hospital laundry bags LO: I understand how the properties of polyethenol relate to its uses.

8.7.3 Polyethyne LO: I understand how polyethyne conducts electricity.

Polyethyne is an electrical . conductor It’s conductivity is the result of . electrons that can move along the carbon chain. delocalised LO: I understand how polyethyne conducts electricity.