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Question

What is the best plastic polymer?


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Solution

Polymer:

  • It is a large molecule with a high molecular mass (103-107u) and is also known as macromolecules.
  • It is formed by the combination of repeating structural (monomers) units.
  • For example, Polyethylene (-CH2-CH2-n) is formed by the repeating monomer units of Ethene (nCH2=CH2).

Plastic:

  • It is a synthetic fiber with linear and cross-linked arrangements.
  • It is easily mouldable in any form and shape.
  • It can also be reused, melted, recycled, colored, and rolled into the sheets or wires.
  • It has also other properties such as non-reactive, strong, light, durable, and poor conductors of heat and electricity,
  • Polythene is an example of plastic that is used for the manufacture of polythene bags.

Best plastic polymer:

  • The best plastic polymer is High-density polyethylene because it is chemically inert, hard, and tough.
  • It is a linear arrangement molecule with a high density due to the close packing structure.
  • It is formed by the combination of Ethene monomer molecules in the presence of Triethylaluminium and Titanium tetrachloride catalysts in the range of 333-343K temperature and 6-7atm pressure.

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