Monomer reactivity ratios

{
  "id": "MLC-T-CHM-007554",
  "term": "Monomer reactivity ratios",
  "field": "Chemistry",
  "definition": "Parameters that describe the relative rates at which a growing polymer chain end, terminated by a specific monomer unit, adds another monomer unit of the same type versus a different type. For a binary copolymerization of monomers M1 and M2, there are two ratios, r1 and r2, defined as the ratio of rate constants for homopropagation to cross-propagation. These ratios dictate the composition and sequence distribution of copolymer chains.",
  "subject": "Polymer",
  "see_also": [
    "binary copolymerisation",
    "chain-end reactivity ratio",
    "cross-propagation",
    "homopropagation",
    "penultimate-unit effect"
  ],
  "references": [
    "PAC, 2008, 80, 2163. 'Glossary of terms related to kinetics, thermodynamics, and mechanisms of polymerization (IUPAC Recommendations 2008)' on page 2179 (https://doi.org/10.1351/pac200880102163)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/monomer-reactivity-ratios/"
}