Despite having the identical monomer (ethene), LDPE and HDPE exhibit drastically different densities and flexibilities. Which structural feature primarily accounts for the low density of LDPE?

Question

Prashant Kotian · Accepted Answer

Correct answer: C. LDPE is synthesized via free-radical polymerization at high pressure. The active radical abstracts hydrogens from its own chain (backbiting), creating extensive branching which prevents close spatial packing.

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