Glass-transition temperature

{
  "id": "MLC-T-CHM-004896",
  "term": "Glass-transition temperature",
  "field": "Chemistry",
  "definition": "The temperature at which an amorphous material undergoes a reversible transition from a rigid, glassy state to a more pliable, rubbery state. Below this temperature, molecular motion is restricted, while above it, segments of polymer chains gain mobility. This temperature is denoted as T_g and is a key property for polymers.",
  "subject": "Inorganic Chemistry",
  "references": [
    "PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 583 (https://doi.org/10.1351/pac199466030577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/glass-transition-temperature/"
}