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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

AI Generated Solution

The correct Answer is:
To determine which of the given options will induce anionic polymerization, we need to analyze each option based on the criteria for anionic polymerization. Anionic polymerization requires an initiator that can donate electrons, typically an electron-donating species. ### Step-by-Step Solution: 1. **Understanding Anionic Polymerization**: - Anionic polymerization is a type of chain-growth polymerization that requires an initiator capable of donating electrons. This is often facilitated by an electron-withdrawing group in the monomer and an electron-donating initiator. 2. **Analyzing the Options**: - **Option 1: KNH2 (Potassium Amide)**: - KNH2 contains the amide ion (NH2^-), which has a lone pair of electrons that can be donated. This makes KNH2 a suitable initiator for anionic polymerization. - **Option 2: N-butanilium (Butyl Ammonium)**: - N-butanilium can dissociate into a butyl group (C4H9^+) and a lithium ion (Li^+). The butyl group has electrons that can be donated, making it also a candidate for anionic polymerization. - **Option 3: KOH (Potassium Hydroxide)**: - KOH contains hydroxide ions (OH^-), which also have a lone pair of electrons available for donation. Thus, KOH can also act as an initiator for anionic polymerization. 3. **Conclusion**: - Since all three options (KNH2, N-butanilium, and KOH) can donate electrons, they are all capable of inducing anionic polymerization. Therefore, the correct answer is: - **Option 4: All of these**. ### Final Answer: **The correct answer is: Option 4 - All of these.**
To determine which of the given options will induce anionic polymerization, we need to analyze each option based on the criteria for anionic polymerization. Anionic polymerization requires an initiator that can donate electrons, typically an electron-donating species. ### Step-by-Step Solution: 1. **Understanding Anionic Polymerization**: - Anionic polymerization is a type of chain-growth polymerization that requires an initiator capable of donating electrons. This is often facilitated by an electron-withdrawing group in the monomer and an electron-donating initiator. 2. **Analyzing the Options**: ...
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