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Polymerization involves various mechanis...

Polymerization involves various mechanisms depending upon the initiator. If initiator generates free radical, addition polymerization takes place through free radical mechanisms. If `H^(+)` is initiator and electron releasing group is present, cationic polymerization takes place. IF electron withdrawing group is present and `KNH_(3)` is initiator, anionic polymerization takes place.
Which of the following will induce anionic polymerization

A

`KNH_(2)`

B

n-Butyllithium

C

KOH

D

All of these

Text Solution

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The correct Answer is:
D
All of these
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Knowledge Check

  • Polymerization involves various mechanisms depending upon the initiator. If initiator generates free radical, addition polymerization takes place through free radical mechanisms. If H^(+) is initiator and electron releasing group is present, cationic polymerization takes place. IF electron withdrawing group is present and KNH_(3) is initiator, anionic polymerization takes place. Which of the following will undergo anionic polymerization in presence of KNH_(2)

    A
    `CH_(2) = underset(C_(6)H_(5))underset(|)(CH)`
    B
    `CH_(2) = underset(CN)underset(|)(CH)`
    C
    `CH_(2) = underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)`
    D
    `CH_(2) = CH_(2)`

  • Polymerization involves various mechanisms depending upon the initiator. If initiator generates free radical, addition polymerization takes place through free radical mechanisms. If H^(+) is initiator and electron releasing group is present, cationic polymerization takes place. IF electron withdrawing group is present and KNH_(3) is initiator, anionic polymerization takes place. Which of the following will undergo cationic polymerization in presence of H^(+)

    A
    `CH_(2)= underset(Cl)underset(|)(CH)`
    B
    `CH_(2) = underset(CN)underset(|)(CH)`
    C
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    D
    `CH_(2) = underset(CH_(3))underset(|)(CH)`

  • Chain initiation and chain propagation steps are involved in a) Cationic polymerization b) Anionic polymerization Free radical polymerization d) Condensation polymerization The correct answer is

    A
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    B
    Only a, b and c
    C
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