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Clothing made from Polymers.
Gore-Tex - Waterproof -
Breathable.
How is Waterproof Clothing Made?
Clothing
can be made waterproof
by using a synthetic fibre
(for example Nylon) with a polyurethane coating.
What is Breathable Waterproof Clothing?
Breathable clothing has a thin film of PTFE
which
has a large number of very small
holes called pores.
There are over 1 billion holes per
square centimetre.
The holes are too small to let
liquid water pass through
which makes the film waterproof. The holes are
big enough to let
water vapour through,
which lets
sweat escape through the clothing making it breathable.
What is Gore-Tex?
The type of material shown in the picture
above is
called Gore-Tex (or Goretex) and is ideal for outdoor clothing.
Links Polymers Revision Questions 
gcsescience.com The Periodic Table Index Polymers Quiz gcsescience.com
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