Beta relaxation peak

{
  "id": "MLC-T-CHM-001201",
  "term": "Beta relaxation peak",
  "field": "Chemistry",
  "definition": "A distinct maximum observed in the mechanical or dielectric loss curve of an amorphous polymer, occurring at temperatures below the glass transition temperature. This peak corresponds to the beta relaxation, which is attributed to localized molecular motions within the polymer structure. Its position and intensity provide insights into the polymer's molecular mobility.",
  "synonyms": [
    "β-loss peak",
    "β-relaxation peak",
    "beta loss peak"
  ],
  "subject": "Polymer",
  "see_also": [
    "loss curve"
  ],
  "references": [
    "PAC, 2013, 85, 1017. 'Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)' on page 1019 (https://doi.org/10.1351/PAC-REC-12-03-02)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/beta-relaxation-peak/"
}