https://doi.org/10.1351/goldbook.R05075
A @C00958@ in which the kinetic-chain carriers are radicals.
Note:
Usually, the growing chain end bears an unpaired electron.
Source:
PAC, 1996, 68, 2287. (Glossary of basic terms in polymer science (IUPAC Recommendations 1996)) on page 2308 [Terms] [Paper]