1. What is a polymer ?
2 .What are synthetic or man-made fibres ?
3 .What is nylon ? state the important properties of nylon ? Give the important uses of nylon
4 .What is polyester ?
5 .Write the characteristics of synthetic fibres ?
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Answers
Answer:
Polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms, including, for example, proteins, cellulose, and nucleic acids.
Synthetic fiber or synthetic fibre are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers.
Synthetic fiber or synthetic fibre are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers.
Explanation:
What is polymer?
A large unit that is formed by the mixture of a large number of very small molecules that are joined from one end to another through chemical relationship is known as polymer.
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What are synthetic or man-made fibres?
The fibres that are manufactured by human's through vary chemical processes in industries are known as man-made or synthetic fibres.
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What is nylon? State important properties of nylon? Give the important uses of nylon.
The first fully synthetic fibres manufactured by human's, is nylon. Nylon is prepared by the process of polymerisation of large number of amide molecules.
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Important properties of nylon:-
- Its very strong, lustrous and highly elastic.
- Nylon fibres are lightweight and are easy to wash.
- They do not absorb water.
- Nylon fibres cannot be attacked by fungi, moths.
- These fibres are wrinkle-free.
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Important uses of nylon:-
- Nylon fibres are having high-tensile strength, so they are used in making fishing rods, climbing ropes etc.
- Nylon fibres are also used in making pulleys or wheels.
- Bristles of toothbrush are also made of nylon.
- Shirts, sarees, socks etc. are made of nylon.
- Carpets, neckties are all made by nylon.
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What is polyester?
Ester (the chemical that gives fruity smell) are processed again and again to form units that are then converted to polyester.
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Characteristics of synthetic fibres?
- Synthetic fibres are cheaper as compared to natural fibres.
- Synthetic fibres do not absorb water so they're dried quickly. They are having drip and dry property.
- Synthetic fibres are more elastic and stronger.
- They're easy to wash and handle.
- Synthetic fibres lasts for a longer period of time, so they're more durable as compared to natural fibres.
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