Good Monomers for Cationic Polymerization H R+ R—C-C (good) H growing chain styrene benzylic carbocation H CH3 CH3 R+ C= R一C一 (good) CH3 CH3 H growing chain isobutylene tertiary carbocation => Chapter 26 8 Chapter 26 8 Good Monomers for Cationic Polymerization =>