Enthalpy recovery, creep and creep-recovery measurements during physical aging of amorphous selenium

Isabel Echeverría, Paula L. Kolek, Donald J. Plazek, Sindee L. Simon

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

The physical aging behavior of amorphous selenium has been investigated using differential scanning calorimetry and conventional and interrupted creep experiments. As a result of physical aging, enthalpy decreases and the creep and recovery curves shift to longer times. The times required to reach equilibrium for enthalpy recovery and creep appear to have different temperature dependences resulting in enthalpy reaching equilibrium before creep at aging temperatures a few degrees below the nominal glass temperature. In the nominal glass transformation range, however, the times required to reach equilibrium are approximately the same. A general picture of aging behavior has emerged from our data on selenium coupled with past work on polyetherimide and polystyrene.

Original languageEnglish
Pages (from-to)242-255
Number of pages14
JournalJournal of Non-Crystalline Solids
Volume324
Issue number3
DOIs
StatePublished - Sep 1 2003

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