Deactivator

{
  "id": "MLC-T-CHM-002879",
  "term": "Deactivator",
  "field": "Chemistry",
  "definition": "A species that reversibly reacts with a propagating polymer chain to form a dormant species, thereby temporarily halting chain growth. This mechanism is central to reversible-deactivation radical polymerization techniques, allowing for control over polymer molecular weight and polydispersity. Examples include stable radicals or transition metal complexes.",
  "subject": "Polymer",
  "see_also": [
    "dormant species",
    "initiating species",
    "propagating species"
  ],
  "references": [
    "PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1119 (https://doi.org/10.1515/pac-2020-1211)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/deactivator/"
}