Rotational frictional coefficient

{
  "id": "MLC-T-CHM-010427",
  "term": "Rotational frictional coefficient",
  "field": "Chemistry",
  "definition": "A measure of the resistance encountered by a molecule or molecular segment as it undergoes rotational motion in a fluid medium. This coefficient is directly proportional to the viscosity of the medium and the effective hydrodynamic volume of the rotating entity. It is used in theories describing the rotational diffusion of macromolecules.",
  "subject": "Polymer",
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 98 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/rotational-frictional-coefficient/"
}