12th Class Chemistry Polymers / बहुलक Question Bank 12th CBSE Chemistry Polymers

  • question_answer
    How does the presence of benzoquinone inhibit the free radical polymerization of a vinyl derivative?

    Answer:

                    Benzoquinone reacts with radical of the growing polymer chain \[(R\centerdot )\] to form a new radical \[(I)\] which is extremely unreactive since it is highly stabilized by resonance. Because of the lack of reactivity of this new radical further growth of the polymer chain is interrupted and hence the reaction stops.


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