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Question

The Prefix 'poly' means 'many' for example, 'polygon' means a figure with many sides. What is the significance of the prefix 'poly' in 'polyester'?

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Solution

  • A polymer is made of two words, 'poly' means many and 'mer' means unit or part.
  • These units are called monomers which are bonded together through ester linkage by covalent bonds and form a larger molecule known as a polymer.
  • Example: Polyethylene Terephthalate
  • In the first step, purified terephthalic acid (PTA), monoethylene glycol, and dimethyl terephthalate react to form bis terephthalate. Finally, PET is formed by heating the bis terephthalate.

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