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SYNTHETIC FIBRES AND PLASTICS

SYNTHETIC FIBRES AND PLASTICS. Ms. ANUPAMA SINGH. Synthetic fibres or man-made fibres. Artificial fibres developed using petroleum products and coal as raw materials. POLYMER. Many small units ( chemical substances ) combined together to form a large single unit is called a polymer.

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SYNTHETIC FIBRES AND PLASTICS

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  1. SYNTHETIC FIBRES AND PLASTICS • Ms. ANUPAMA SINGH

  2. Synthetic fibres or man-made fibres Artificial fibres developed using petroleumproducts and coal as raw materials

  3. POLYMER • Many small units (chemicalsubstances) combined together to form a large single unit is called a polymer. • Example: Cotton or cellulose

  4. MONOMER • The repeat unit (chemicalsubstance) of a polymer is called its monomer. • Example: glucose is a monomer of cotton.

  5. Polymerisation • The process by which artificialfibres are made from simple molecules.

  6. PETROCHEMICALS • Rawmaterials obtained from petroleum and used for preparing synthetic fibres. • Example: petrol, diesel, kerosene etc.

  7. TYPES OF SYNTHETIC FIBRES

  8. RAYON

  9. Rayon is also called as artificialsilk due to its properties which are similar to that of silk.

  10. Rayon is obtained by chemical treatment of woodpulp.

  11. Rayon is known as a regeneratedfibre as it is made from a naturalfibre by man.

  12. Rayon mixed with cotton is used to make bedsheets.

  13. Rayon mixed with wool is used to make carpets.

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