{"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":"

What are Synthetic Fibres and give some Examples<\/h2>\n

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.
\nNatural fabrics have been used for clothing since ancient times. But nowadays, synthetic fibres are largely used for clothing and other purposes.<\/p>\n

Synthetic fibres<\/strong><\/h3>\n

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.
\nRayon, nylon, polyester, acrylic, and spandex are examples of synthetic fibres.<\/p>\n

    \n
  1. Polyamides and polyesters are two groups of synthetic fibres with high strength, not easily stretched and used as textile.<\/li>\n
  2. Nylon is an example of polyamide polymers. Terylene is an example of polyester polymers.<\/li>\n
  3. Nylon and terylene are produced through condensation polymerisation.<\/li>\n
  4. Nylon<\/strong>
    \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.
    \n\"What
    \n(d) Nylon-6,6 is manufactured from polymerisation of hexane-1,6-diamine and hexane-1,6-dioc acid.
    \n\"What
    \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
  5. Terylene<\/strong>
    \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.
    \n\"What
    \n(d) Terylene for example, is manufactured from ethane-1,2-diol and (benzene)benzoic- 1,4- dicarboxylic acid.
    \n\"What
    \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

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