Asked Dec 24, 2019
  • What is the role of benzoyl peroxide in addition polymerisation of alkenes? Explain its mode of action with the help of an example.

Expert Answer

Step 1

Benzoyl peroxide acts as initiator in polymerization of alkenes by giving chain reactions. The double bonds of monomer gets add by new free radical and forms a larger free radical whihc adds to another alkene molecule and produces the polymer.

Chain initiation step:


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Heat, 2C,H-Ç_0→2C,H5+2CO, Cgoogene. C,H5- -CHz- Phenyl radical

Step 2

Chain propagating ...


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+CH, “CH,→In–CH,–CH, In


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