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Multiple Choice
Which of the following monomers could polymerize through all three chain-growth mechanisms?
A
styrene
B
methyl 2-cyanoacrylate
C
vinyl acetate
D
2-methoxyprop-1-ene
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1
Identify the three chain-growth polymerization mechanisms: free radical, cationic, and anionic polymerization.
Examine the structure of styrene. It has a vinyl group attached to a phenyl ring, which can stabilize both cationic and anionic intermediates, making it suitable for all three mechanisms.
Analyze methyl 2-cyanoacrylate. The electron-withdrawing cyano and ester groups make it highly reactive towards anionic polymerization, but less suitable for cationic polymerization due to potential side reactions.
Consider vinyl acetate. The ester group can stabilize radicals, making it suitable for free radical polymerization, but it is less reactive towards anionic and cationic polymerization.
Evaluate 2-methoxyprop-1-ene. The methoxy group can stabilize cationic intermediates, making it suitable for cationic polymerization, but it is less reactive towards anionic and free radical polymerization.