Free-draining

{
  "id": "MLC-T-CHM-004660",
  "term": "Free-draining",
  "field": "Chemistry",
  "definition": "A descriptor of a dissolved macromolecule through whose coil solvent flows undisturbed, which corresponds to the limit of zero hydrodynamic interaction between segments. Each segment then meets friction independently of the others, as in the Rouse bead-spring model. The limit is approached by short chains with few segments, whereas long coils in dilute solution behave as non-draining and are described by the Zimm model, which includes hydrodynamic interaction.",
  "synonyms": [
    "freely draining"
  ],
  "subject": "Polymer",
  "see_also": [
    "hydrodynamic interaction"
  ],
  "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 102 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/free-draining/"
}