Question

Differentiate between natural fibres and synthetic fibres. State what terylene is. State some of its characteristics properties which make it suitable for commercial use.

Answer 1

Hint: Fibres are the thin thread like material which is obtained from natural sources like plants and animals. The fibres thus obtained are then converted into fabric by the process of yarn and spinning. The fabric thus obtained is used for clothing. Nowadays, the fibres can be obtained by the polymerization process of single monomer unit.

Complete step by step answer:
Natural fibres:
(i) Natural fibres are the fibres which are obtained from natural sources like plants and animals.
(ii) In natural fibres the possibility of obtaining dust particles and other impurities are high.
(iii) Natural fibres are less durable.
(iv) Natural colour has natural colour.
Synthetic fibre:
(i) Synthetic fibres are the fibres which are prepared by humans in laboratories.
(ii) Synthetic fibres do not contain impurities.
(iii) Synthetic fibre shows high durability.
(iv) In synthetic fibre, color is added as per the requirement.
Terylene is the polymer formed by the reaction of ethylene glycol and terephthalic acids.
Properties of terylene:
(i) It is a very strong fibre and thus resists the loss of strength when wet.
(ii) It shows elastic nature.
(iii) Terylene can be washed easily and dried quickly.
These properties help to make terylene a good synthetic fibre. It is used to make clothes and plastic bottles.

Note: The polymer terylene is also known as dacron and it is formed by the polymerization process. It is synthetic polyester fibre. Terylene is combined with natural fibres to make high quality fabrics.