Transformation of egg-white glass into partially crystallized glass induced by heat treatment and gamma-ray irradiation

Haruichi Kanaya, Tetsuaki Nishida, Masakazu Ohara, Kazuhiro Hara, Kazumi Matsushige, Eisei Takushi, Yasukuni Matsumoto

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20 Citations (Scopus)

Abstract

Egg-white gel is easily transformed into transparent “glass" by drying at ambient temperature, e.g. at 25° 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-1 were respectively assigned to ν (NH) and να(C=O) stretching modes in the amido (RCONH-) groups, and the δ(NH) bending mode was observed at 1521–1546 cm-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° C when the heating rates were 2, 5, 10 and 20° C min-1, respectively. Heat treatment of egg-white glass at 60° 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.

Original languageEnglish
Number of pages1
JournalJapanese Journal of Applied Physics
Volume33
Issue number1R
DOIs
Publication statusPublished - Jan 1994

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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