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 language | English |
|---|---|
| Pages (from-to) | 327-329 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 263-264 |
| DOIs | |
| Publication status | Published - Jan 1 1999 |
| Event | Proceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98 - Lancaster, Great Britain Duration: Jul 26 1998 → Jul 31 1998 |
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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 journal › Conference article
}
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 -