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In cationic polymerizalion, the initiato...

In cationic polymerizalion, the initiator is an electrophile that adds to the alkene, causing it to become a cation. The Initiator most often used in cationic polymerization is a lewis acid. Such as `BF_(3)` or `AICI_(3)` and in anionic polymerization, the iniliator is a nucleophile that reacts with the alkene to form a propagating site that is an anion.
Arrange the following group of monomers of decreasing ability to undergo cationic polymerization

A

`(iv)gt(iii)gt(ii)gt(i)`

B

`(ii)gt(iii)gt(iv)gt(i)`

C

`(iv)gt(i)gt(ii)gt(iii)`

D

`(iv)gt(ii)gt(iii)gt(i)`

Text Solution

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The correct Answer is:
A
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In cationic polymerizalion, the initiator is an electrophile that adds to the alkene, causing it to become a cation. The Initiator most often used in cationic polymerization is a lewis acid. Such as BF_(3) or AICI_(3) and in anionic polymerization, the iniliator is a nucleophile that reacts with the alkene to form a propagating site that is an anion. Which of the follówing represents anionic polymerisation?

In cationic polymerizalion, the initiator is an electrophile that adds to the alkene, causing it to become a cation. The Initiator most often used in cationic polymerization is a lewis acid. Such as BF_(3) or AICI_(3) and in anionic polymerization, the iniliator is a nucleophile that reacts with the alkene to form a propagating site that is an anion. What monomer and what type initiator would you use to synthesize following polymer ?

Knowledge Check

  • The decreasing order of stability of following cations is

    A
    `P gt Q gt R gt S`
    B
    `Q gt S gt R gt P`
    C
    `Q gt P gt S gt R`
    D
    `Q gt P gt R gt S`

  • The decreasing order of stability of following cations is

    A
    `P gt R gt Q gt S`
    B
    `Q gt R gt S gt P`
    C
    `R gt S gt Q gt P`
    D
    `P gt R gt S gt Q`

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    Which of the following monomers would be most reactive towards cationic polymerization?

    The species which can best serve as an initiator for the cationic polymerizations is

    The species which can best serve as an initiator for the cationic polymerization is:

    Describe briefly: Anionic polymerization

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