Viscosity function

{
  "id": "MLC-T-CHM-012593",
  "term": "Viscosity function",
  "field": "Chemistry",
  "definition": "A mathematical relationship that describes how the viscosity of a polymer solution or melt changes with the shear rate or shear stress. For non-Newtonian fluids, such as most polymer systems, the viscosity is not constant but depends on the flow conditions. This function is often plotted as viscosity versus shear rate, showing shear-thinning or shear-thickening behavior characteristic of the specific polymer and solvent system.",
  "subject": "Polymer",
  "see_also": [
    "coefficient",
    "intrinsic viscosity",
    "radius of gyration"
  ],
  "references": [
    "Purple Book, 1st ed., p. 64 (http://old.iupac.org/publications/books/author/metanomski.html)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/viscosity-function/"
}