From the following list of chemical agents, how many act primarily as chain initiators for free-radi — Polymers Chemistry Question
Question
From the following list of chemical agents, how many act primarily as chain initiators for free-radical addition polymerization? Benzoyl peroxide, Acetyl peroxide, tert-Butyl peroxide, Boron trifluoride, $n$ -Butyllithium, Potassium amide.
Answer: 3
💡 Solution & Explanation
Benzoyl peroxide, Acetyl peroxide, and tert-Butyl peroxide undergo homolytic cleavage under mild heat/light to generate free radicals, making them free-radical initiators. $BF_3$ is a cationic Lewis acid initiator. $n$ -Butyllithium and Potassium amide are strong bases used as anionic initiators. Count is 3.
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