propagating species

in a chain polymerization
synonyms: active macromolecule (in RDP), active polymer chain, growing chain
https://doi.org/10.1351/goldbook.08966
Active species formed by addition to monomer that is capable of adding further monomer.
Note:
The propagating species are chain carriers in chain polymerization.
Source:
PAC, 2022, 94, 1093. (Terminology for chain polymerization (IUPAC Recommendations 2021)) on page 1124 [Terms] [Paper]