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

A. Nakamura, Kazuhiro 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 - Jan 1 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

Fingerprint

eggs
Gels
gels
anomalies
low frequencies
heat
glass
Glass
Bosons
amorphous materials
Frequency bands
Hot Temperature
Raman scattering
Glass transition
Polymers
glass transition temperature
Elastic moduli
Heat treatment
Stiffness
stiffness

All Science Journal Classification (ASJC) codes

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

Cite this

Low frequency Raman peak and elastic anomaly of dehydrated heat-treated egg-white gel. / Nakamura, A.; Hara, Kazuhiro; Hiramatsu, N.; Matsumoto, A.

In: Physica B: Condensed Matter, Vol. 263-264, 01.01.1999, p. 327-329.

Research output: Contribution to journalConference article

Nakamura, A. ; Hara, Kazuhiro ; Hiramatsu, N. ; Matsumoto, A. / Low frequency Raman peak and elastic anomaly of dehydrated heat-treated egg-white gel. In: Physica B: Condensed Matter. 1999 ; Vol. 263-264. pp. 327-329.
@article{4f5e557b855648c68439efc2fb8dd91f,
title = "Low frequency Raman peak and elastic anomaly of dehydrated heat-treated egg-white gel",
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.",
author = "A. Nakamura and Kazuhiro Hara and N. Hiramatsu and A. Matsumoto",
year = "1999",
month = "1",
day = "1",
doi = "10.1016/S0921-4526(98)01231-9",
language = "English",
volume = "263-264",
pages = "327--329",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",

}

TY - JOUR

T1 - Low frequency Raman peak and elastic anomaly of dehydrated heat-treated egg-white gel

AU - Nakamura, A.

AU - Hara, Kazuhiro

AU - Hiramatsu, N.

AU - Matsumoto, A.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032636890&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032636890&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(98)01231-9

DO - 10.1016/S0921-4526(98)01231-9

M3 - Conference article

AN - SCOPUS:0032636890

VL - 263-264

SP - 327

EP - 329

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

ER -