Question

What is the best plastic polymer?

Answer 1

Polymer:

• It is a large molecule with a high molecular mass (${10}^3-{10}^7\mathrm{u}$) and is also known as macromolecules.
• It is formed by the combination of repeating structural (monomers) units.
• For example, Polyethylene (${\left[-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\right]}_{\mathrm{n}}$) is formed by the repeating monomer units of Ethene (${\mathrm{nCH}}_2={\mathrm{CH}}_2$).

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 $333-343\mathrm{K}$ temperature and $6-7\mathrm{atm}$ pressure.