Zimm plot

{
  "id": "MLC-T-CHM-012810",
  "term": "Zimm plot",
  "field": "Chemistry",
  "definition": "A graphical method used to determine the molecular weight, radius of gyration, and second virial coefficient of a polymer in solution from light scattering data. It involves plotting the quantity (Kc/Rθ) against (sin²(θ/2) + kc), where K is an optical constant, c is the polymer concentration, Rθ is the Rayleigh ratio at angle θ, and k is an arbitrary constant. The intercepts and slopes of the extrapolated lines provide the desired polymer characteristics.",
  "subject": "Polymer",
  "see_also": [
    "Rayleigh ratio",
    "chemical potential",
    "excess Rayleigh ratio",
    "particle scattering function",
    "radius of gyration",
    "scattering",
    "virial coefficients"
  ],
  "references": [
    "Purple Book, 1st ed., p. 66 (http://old.iupac.org/publications/books/author/metanomski.html)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/zimm-plot/"
}