Glass Transition in Fructose-Water Mixture Studied by Broadband Dielectric Spectroscopy

• Main Authors: Shinohara, M, Goto, T, Oyama, M, Suzuki, S, Shinyashiki, N, Yagihara, S, Inoue, T, Oyaizu, S, Yamamoto, S
• Format: Conference Proceeding
• Language: English
• ISSN: 0094-243X
• DOI: 10.1063/1.2204476

Broadband dielectric measurements for 86.5, 88.2, and 94.6wt% fructose-water mixtures were carried out in the frequency range of 2mHz to 20GHz in the temperature range of -30 deg C to 45 deg C. Two relaxation processes were observed, in addition to the low frequency electrode polarization and contribution of dc conductivity. The high-frequency process (-process) was observed in the frequency range between 100kHz and 100MHz. The low-frequency process (-process) was observed in the frequency range between 100mHz and 10MHz. The relaxation strength of the -process increases and that of the -process decreases with increasing water content. Even in the fructose-water mixture, the each component do not show the respective relaxation process, i. e., the primary -process results from the cooperative motion of two components and the -process is dominated by the local motion of water molecules.