Question

The species which can best serve as an initiator for cationic polymerization is:

• A. $NaB{H}_4$
• B. $AlC{l}_3$
• C. $BuLi$
• D. $LiAl{H}_4$

Answer 1

The correct option is B $AlC{l}_3$

Cationic polymerization is initiated by the use of strong lewis acids such as $H_{2}S{O}_4,HF,AlC{l}_3,SnC{l}_4$ or $B{F}_3$ in $H_{2}O$ .