TY - JOUR
T1 - Transformation of Egg-White Glass into Partially Crystallized Glass Induced by Heat Treatment and Gamma-Ray Irradiation.
AU - Kanaya, Haruichi
AU - Nishida, Tetsuaki
AU - Ohara, Masakazu
AU - Hara, Kazuhiro
AU - Matsushige, Kazumi
AU - Takushi, Eisei
AU - Matsumoto, Yasukuni
PY - 1994
Y1 - 1994
N2 - Egg-white gel is easily transformed into transparent “glass” by drying at ambient temperature, e.g., at 25<SUP>° C for 140 min. The optical transmittance is increased from 2 to 25% accompanied with a decrease in the weight by more than 70%. Broad and intense IR absorption peaks observed at 3288-3308 and 1653-1657 cm<SUP>-1 were respectively assigned to ν (NH) and ν<SUB>α(C=O) stretching modes in the amido (RCONH-) groups, and the δ(NH) bending mode was observed at 1521-1546 cm<SUP>-1. Differential thermal analysis (DTA) study showed a distinct endothermic peak due to the glass transition, and the peak position was located at 36, 42, 58 and 69<SUP>° C when the heating rates were 2, 5, 10 and 20<SUP>° C min<SUP>-1, respectively. Heat treatment of egg-white glass at 60<SUP>° C or γ-ray irradiation resulted in partial crystallization, and the XRD patterns showed a few diffraction peaks superimposed on the halo peak due to the glassy phase.
AB - Egg-white gel is easily transformed into transparent “glass” by drying at ambient temperature, e.g., at 25<SUP>° C for 140 min. The optical transmittance is increased from 2 to 25% accompanied with a decrease in the weight by more than 70%. Broad and intense IR absorption peaks observed at 3288-3308 and 1653-1657 cm<SUP>-1 were respectively assigned to ν (NH) and ν<SUB>α(C=O) stretching modes in the amido (RCONH-) groups, and the δ(NH) bending mode was observed at 1521-1546 cm<SUP>-1. Differential thermal analysis (DTA) study showed a distinct endothermic peak due to the glass transition, and the peak position was located at 36, 42, 58 and 69<SUP>° C when the heating rates were 2, 5, 10 and 20<SUP>° C min<SUP>-1, respectively. Heat treatment of egg-white glass at 60<SUP>° C or γ-ray irradiation resulted in partial crystallization, and the XRD patterns showed a few diffraction peaks superimposed on the halo peak due to the glassy phase.
U2 - 10.1143/JJAP.33.226
DO - 10.1143/JJAP.33.226
M3 - Article
SN - 0021-4922
VL - 33
SP - 226
EP - 229
JO - Japanese Journal of Applied Physics, Part 2: Letters
JF - Japanese Journal of Applied Physics, Part 2: Letters
IS - 1
ER -