1. Cotton(Cellulose/vegetable fibre)
Grade 10 Term 3 Week 4 Lesson 2
Cotton(Cellulose/vegetable fibre)

2. Origin of Cotton Natural fibre Found in seed pods of the cotton plant
Conventional cotton is environmentally friendly

3. Desirable properties of Cotton
Is durable – surface will not damage if rubbed
Good conductor of heat – cool to wear
Very absorbent –comfortable to wear
Because absorbent - No static electricity
Strong fibre –stronger when wet
Because absorbent –colours well
100% biodegradable

4. Less desirable properties of cotton
Cotton will shrink with first wash
Poor resilience –will wrinkle easily
Mildew and bacteria damage cotton
Silverfish will eat it –if heavily starched
Burns very easily
– smells like paper
burning

5. Cotton mark
100 % Cotton
Blend -60% Cotton

6. Uses of Cotton

7. Linen (Cellulose/vegetable fibre)

8. Origin of Linen It is made of flax fibres
Flax is a woody fibre – from the bast of plants
Conventional flax fibres – need a lot of processing before it can be used for fabrics

9. Desirable properties of Linen
Strong – stronger when wet
Withstand rubbing when washed
Resistant to sunlight - excellent as curtains
Moth-resistant
Good conductor of heat – cool to wear
Very absorbent
Does not build up
static electricity

10. Less desirable properties of Linen
Difficult to iron
No resilience - wrinkles badly
Damaged by mildew and bacteria when stored in humid atmosphere
Will shrink unless treated

11. Uses of Linen