Ultrasonic Relaxation Study in Gelatin Sols and Gels
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概要
- 論文の詳細を見る
Ultrasonic absorption was measured in gelatin sols and gels in the frequency range of 0.2-35 MHz. Two techniques, a plano-concave resonator method and optical beam deflection by ultrasonic waves, were used to cover the wide frequency range. The absorption spectra observed both in the sols and gels were well fitted to the relaxation curves, assuming the Cole-Coletype distribution of relaxation times. A change in relaxation parameters upon gelation was obtained: the relaxation frequency decreased, the relaxation strength increased and the distribution became wider. The relaxation mechanism is discussed in the light of the hydration equilibrium of gelatin polymers.
- 社団法人応用物理学会の論文
- 2000-05-30
著者
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Choi Pak-kon
Department Of Physics Meiji University
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Tanimoto Ryosuke
Department Of Physics Meiji University
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Choi Pak-Kon
Department of Physics, Meiji University
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