Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation $NO_{2}C_{6}H_{5} - CH = CH_{2}$ $CH_{2} = CH - C_{6}H_{5}CH_{3}$ $CH_{2} = CH - C_{6}H_{5}OCH_{3}$

Question

Dr. Abubacker · Accepted Answer

(b)
Electron releasing groups such as $CH_{3}, - OCH_{3}$ activate the monomer towards cationic polymerisation as these groups provide stability to the carbocation formed. Thus, the correct order is
$CH_{2} = CHC_{6}H_{5}\left( OCH_{3} \right) > CH_{2} = CH - C_{6}H_{5}\left( CH_{3} \right) > NO_{2}C_{6}H_{5} - CH = CH_{2}$

Q. Arrange the following monomers in order of decreasing ability to undergo cationic polymerisation $NO_{2}C_{6}H_{5} - CH = CH_{2}$ $CH_{2} = CH - C_{6}H_{5}CH_{3}$ $CH_{2} = CH - C_{6}H_{5}OCH_{3}$

Explanation

Reviewed by Dr. Abubacker

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