Glass transition

{
  "id": "MLC-T-CHM-004894",
  "term": "Glass transition",
  "field": "Chemistry",
  "definition": "A reversible transition in amorphous materials, such as polymers or glasses, from a hard, glassy state to a more flexible, rubbery state upon heating. This transition is not a true phase transition but rather a change in the material's mechanical and thermal properties. It is characterized by a change in the slope of the specific volume versus temperature curve.",
  "subject": "Inorganic Chemistry",
  "see_also": [
    "glass-transition temperature",
    "second-order transition"
  ],
  "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/"
}