Question

6. Do the yarns melt on burn? What type of odour is given off? Wite down your observation.

Answer 1

Burning different types of yarns results in different observations. let's discuss them one by one.

Observations on different yarns:

Cotton:

• If the yarns are cotton, they will burn but not shrink or melt.
• The odour of burning yarn is comparable to that of burning paper. This is because both paper and cotton has Cellulose.

Silk:

• The silk yarn shrinks and burns but does not melt when exposed to the flame.
• It has a burned meat odour to it.

Wool:

• Wool yarn shrinks and burns as well, but it does not melt.
• It has a distinct burning hair odour.

Synthetic yarn:

• Synthetic yarns shrink and burn when exposed to heat.
• They also melt and have an odour that is similar to that of burning plastics.