Question

High density polythene is obtained by

• A. Polymerisation of ethane in a hydrocarbon solvent in the presence of Ziegler-Natta catalyst.
• B. Polymerisation of ethane under high pressure and temperature.
• C. Free radical polymerization of ethane at low temperature in presence of peroxide.
• D. Polymerisation of ethane in presence of carbon tetrachloride.

Answer 1

Answer: (A)

Polymerisation of ethane in a hydrocarbon solvent in the presence of Ziegler-Natta catalyst.

Answer 2

When ethane in a hydrocarbon solvent in presence of a catalyst like Ziegle-Natta is heated at a temperature of 333-343 K and under pressure of 6-7 atmosphere, a high density polythene is formed.