During addition polymerisation of ethene molecules , the initiator like benzoyl peroxide , acetyl peroxide , tert-butyl peroxide , etc ., are added . Their function is to

Options

A. ensure anti-Markownikoff's addition of molecules to form polymer
B. give cations during the reaction which join together to form bigger molecules
C. decrease the temperature of the reaction mixture
D. generate free radical which adds to the monomer to give bigger free radical .

Answer

D

Explanation

Free radical is generated by peroxide in the chain initiating step . The free radical join with monomer to propagate the chain .