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Living in a Material World
Dyes
To start off our tour through materials we begin by looking at cloth and the ways that chemistry can affect its properties.
An obvious way of changing cloth is to apply different kinds of dyes to change its colour.
These dyes must be colour fast i.e. they won't fade in bright sunshine and wash proof so the dye doesn't come out in the wash!
We will first look at a natural dye called Indigo and then a chemically manufactured group of dyes called Azo dyes.
Chemists can now make dyes of just about any colour!
Next - Indigo Dyes
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