Branching index

{
  "id": "MLC-T-CHM-001483",
  "term": "Branching index",
  "field": "Chemistry",
  "definition": "A parameter, commonly symbolised g, that quantifies the degree of branching in a polymer. It is the quotient of the coil's mean-square radius of gyration for a branched chain and for a linear chain having the same molar mass. Branching makes the coil more compact, so g falls below 1 and decreases as branching increases.",
  "subject": "Polymer",
  "see_also": [
    "radius of gyration",
    "relative molecular mass"
  ],
  "references": [
    "Purple Book, 1st ed., p. 51 (http://old.iupac.org/publications/books/author/metanomski.html)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/branching-index/"
}