{"id":4784,"date":"2020-11-30T12:32:56","date_gmt":"2020-11-30T07:02:56","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=4784"},"modified":"2020-11-30T18:05:51","modified_gmt":"2020-11-30T12:35:51","slug":"synthetic-fibres-examples","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/synthetic-fibres-examples\/","title":{"rendered":"What are Synthetic Fibres and give some Examples"},"content":{"rendered":"
Most clothing materials or fabrics we use in our day-to-day lives are made from thin, thread-like fibres. Fibres<\/strong> can be either natural or artificial. Fibres that are made by human beings are called synthetic fibres<\/strong>. Most synthetic fibres are obtained from coal, petroleum, and natural gas. A synthetic fibre consists of multiple units (each of which is a chemical substance), which are joined together to form a single unit called a polymer (poly: many; mer: unit). The structure of a polymer can be described as resembling numerous beads on a string, with the beads representing the individual units that are joined together. People also ask<\/strong><\/p>\n Rayon, also called artificial silk, is prepared from cellulose<\/strong> (which comes from wood pulp).<\/p>\n Properties<\/strong><\/p>\n Uses <\/strong><\/p>\n
\nNatural fabrics have been used for clothing since ancient times. But nowadays, synthetic fibres are largely used for clothing and other purposes.<\/p>\nSynthetic fibres<\/strong><\/h3>\n
\nRayon, nylon, polyester, acrylic, and spandex are examples of synthetic fibres.<\/p>\n\n
\n(a) Nylon is a general term given to the synthetic polymer made from two types of monomer, diamine molecules and diacid molecules.
\n(b) A diamine molecule has two -NH2<\/sub> groups and a diacid has two -COOH groups.
\n(c) Diacid molecules and diamine molecules undergo condensation reaction to form nylon and water.
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\n(d) Nylon-6,6 is manufactured from polymerisation of hexane-1,6-diamine and hexane-1,6-dioc acid.
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\n(e) Nylon-6,6 is a strong, tough and waterproof polymer and can be easily made into fibres.
\n(f) Nylon is used to make toothbrushes, ropes, fishing lines, parachutes, carpets, textile, threads and electrical insulators.<\/li>\n
\n(a) The monomers used to make polyester are diol molecules and diacid molecules.
\n(b) A diol molecule has two -OH groups and a diacid molecule has two -COOH groups.
\n(c) When many diacid molecules condense with diol molecules, a polyester and water are formed.
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\n(d) Terylene for example, is manufactured from ethane-1,2-diol and (benzene)benzoic- 1,4- dicarboxylic acid.
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\n(e) Terylene is suitable for making textile, stocking, parachutes and fishing nets because it is elastic, chemically inert, can be coloured and easily made into fibre.<\/li>\n<\/ol>\n\n
Rayon<\/strong><\/h3>\n
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