What are LDPE and HDPE? How are they prepared? - Vidyadip

Question

What are LDPE and HDPE? How are they prepared?

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Answer

LDPE (Low Density Polyethylene): LDPE is obtained by the polymerisation of ethene under high pressure of 1000-2000 atm at 350-570K in the presence of an initiator.
HDPE (High Density Polyethylene): It is obtained when polymerisation is done in the presence of Ziegler-Natta catalyst at 333-343K under 6-7 atm pressure.

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