Root-mean-square unperturbed radius of gyration

{
  "id": "MLC-T-CHM-010409",
  "term": "Root-mean-square unperturbed radius of gyration",
  "field": "Chemistry",
  "definition": "The average size of a polymer coil in an ideal theta solvent, where excluded volume effects are negligible. This parameter reflects the intrinsic dimensions of the polymer chain, determined by its local structure and short-range interactions, without expansion or contraction due to solvent quality. It is a key characteristic for understanding polymer conformation in the absence of long-range interactions.",
  "subject": "Polymer",
  "see_also": [
    "root-mean-square radius of gyration"
  ],
  "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 75 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/root-mean-square-unperturbed-radius-of-gyration/"
}