8.7 Specialised Polymers

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8.7 Specialised Polymers

• 8.7.1 Kevlar

LO I understand how the uses of kevlar are
related to its properties
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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
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8.7.2 Polyethenol

• LO I understand how the properties of
  polyethenol relate to its uses.

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Polyethenol is a polymer
water soluble

• The solubility of polyethenol can be varied by
  changing the number of groups
  present.

hydroxyl
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.
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8.7.3 Polyethyne

• LO I understand how polyethyne conducts
  electricity.

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Polyethyne is an electrical .
conductor
delocalised

• Its conductivity is the result of
  . electrons that can move along the carbon
  chain.

LO I understand how polyethyne conducts
electricity.