Chain entanglement

{
  "id": "MLC-T-CHM-001839",
  "term": "Chain entanglement",
  "field": "Chemistry",
  "definition": "The topological interpenetration and intertwining of polymer chains in a concentrated solution or melt, resembling a macroscopic entanglement of ropes. These physical interactions restrict the movement of individual chains, significantly influencing the rheological and mechanical properties of the polymer material. The entanglement molecular weight is a characteristic parameter for a given polymer.",
  "subject": "Polymer",
  "see_also": [
    "network"
  ],
  "references": [
    "PAC, 2007, 79, 1801. 'Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)' on page 1818 (https://doi.org/10.1351/pac200779101801)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/chain-entanglement/"
}