Something about amber: Fictive temperature and glass transition temperature of extremely old glasses from copal to Triassic amber

Jing Zhao, Eugenio Ragazzi, Gregory B. McKenna

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In previous work we successfully used a stable Dominican amber to investigate the sub-glass transition dynamics of an organic glass with extremely low fictive temperature. The results provided an incentive to seek other stable ambers with lower values of fictive temperature. In the present work, a series of fossil resins from different locations, and ages ranging from approximately 100 years-230 million years, has been investigated using differential scanning calorimetry. The measurement results show the thermal signatures for each fossil sample: copals are unstable, and have lower glass transition temperatures than the amber samples. For the amber samples, there is not a systematic age dependence for the amber's glass transition temperature. Furthermore, even for the same sort of amber, the thermal properties can be different for different samples. The stability of the fossil resins was studied and glass transition temperatures were determined. For the stable samples, fictive temperature was also determined.

Original languageEnglish
Pages (from-to)7041-7047
Number of pages7
JournalPolymer
Volume54
Issue number26
DOIs
StatePublished - Dec 13 2013

Keywords

  • Age
  • Amber
  • Glass transition

Fingerprint Dive into the research topics of 'Something about amber: Fictive temperature and glass transition temperature of extremely old glasses from copal to Triassic amber'. Together they form a unique fingerprint.

  • Cite this