Question 30.6 Explain why cationic polymerizat... [FREE SOLUTION]

Chapter 30: Question 30.6 (page 1205)

Explain why cationic polymerization is an effective method of polymerizing ${CH}_{2} = C {({CH}_{3})}_{2}$ but not ${CH}_{2} = {CH}_{2}$ .

Short Answer

Expert verified

Answer

More stable 3掳 carbocations readily react in cationic polymerization than the 1掳 carbocations. Among two , ${CH}_{2} = C {({CH}_{2})}_{3}$ will form a more substituted carbocation than ${CH}_{2} = {CH}_{2}$ .

Step by step solution

Cationic polymerization

The polymerization technique, in which there will be a cationic initiator that transfers charge to the monomer to become reactive. The reactive monomers get added in a similar way to form polymers.

Reason why cationic polymerization is effective for the first compound

The phenomenon of cationic polymerization proceeds via a carbocation intermediate. The substrate that forms stable 3掳 carbocations have more capability to react. But 1掳 carbocations is less stable.

Thus, ${CH}_{2} = C {({CH}_{3})}_{2}$ will form a more substituted carbocation than ${CH}_{2} = {CH}_{2}$ .