Low frequency Raman peak and elastic anomaly of dehydrated heat-treated egg-white gel

A. Nakamura, K. Hara, N. Hiramatsu, A. Matsumoto

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

The viscoelastic stiffness of dehydrated heat-treated egg-white gel (DHTEWG) was measured with increasing temperature. The storage modulus decreased remarkably and the loss modulus showed a broad peak around the temperature where a thermal anomaly had been observed. Because these features are usually observed in the noncrystalline polymers around the glass transition temperature, the occurrence of the glass transition was confirmed in DHTEWG around Tg, which meant that DHTEWG could be regarded as a glass. Moreover, we also observed the low frequency Raman spectra of dehydrated egg-white (DEW) without the heat treatment and compared with those of DHTEWG. From this investigation, a notable difference has been revealed in the low-lying band frequency; in DEW, it was approximately the same as that of the boson peak reported on many amorphous materials or glasses, on the other hand, in DHTEWG, the frequency was 2-3 times as much as that value.

Original languageEnglish
Pages (from-to)327-329
Number of pages3
JournalPhysica B: Condensed Matter
Volume263-264
DOIs
Publication statusPublished - Mar 1999
EventProceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98 - Lancaster, Great Britain
Duration: Jul 26 1998Jul 31 1998

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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