Vogel-Fulcher-Tammann equation

{
  "id": "MLC-T-CHM-012600",
  "term": "Vogel-Fulcher-Tammann equation",
  "field": "Chemistry",
  "definition": "An empirical equation that describes the temperature dependence of the relaxation time or viscosity of supercooled liquids, particularly near the glass transition temperature. It suggests that the relaxation time diverges at a finite temperature below the glass transition. This equation is often used to characterize the fragility of glass-forming liquids.",
  "synonyms": [
    "VFT Equation"
  ],
  "subject": "Polymer",
  "see_also": [
    "Kauzmann temperature",
    "fragile glass"
  ],
  "references": [
    "PAC, 2013, 85, 1017. 'Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)' on page 1044 (https://doi.org/10.1351/PAC-REC-12-03-02)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/vogel-fulcher-tammann-equation/"
}