Effect of water cluster state influenced by the polarized properties on dielectric constant and loss

Abstract

effect Electron donor Effect of water cluster state influenced by the polarized properties on dielectric constant and loss. hydrogenbonding energy meV meV -CH3 toluene 9.04 7.82 -0CH3 anisole 11.42 13.13 * v 3 * V I function compound T. Iwasawa, K. Ohota, M. Sone Musashi Institute of Technology 1-28-1 Tamazutsumi Setagayaku Tokyo 158 JAPAN benzene AbstractIn order to describe the mechanisms of the effect of water on electrical properties, we scope the state of the dissolved water which can be analyzed by IR spectrum. In our studies, it has been investigated that the conduction current in a dielectric liquid relates with the structure of water clusters which are formed by hydrogen bonding. Confirming the formation of water cluster, the dielectric constant and loss of several kinds of aromatic hydrocarbons are measured in this report. The samples used can be classified to the two groups. One is the sample which has a electron donor functional group, and another is a electron donor functional group. As the results, the effect of water on the dielectric constant and loss in the electron donor functional group is not sensitive rather than that on the electron acceptor functional group. Because of the hydrogen bonding energy calculated from IR spectrum is not quite different in the donor group and acceptor group, the sensitivity of the effect of water on dielectric constant and loss would be caused by the polarization characteristics of benzene ring. 9.04 7.67

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“…It has been reported that the slow down in this rate is presumably due to the saturation of the moisture absorption level. 17,18 As shown in Figure 16, the increment of 60 vol % ECP was larger than that of 50 vol % ECP as the polymer/ceramic interface is one of the main sites of moisture absorption. However, the increment of 70 vol % ECP was smaller than that of the 60 vol % ECP.…”

Dielectric properties of calamansi (Citrus microcarpa) under high‐temperature treatment

“…Water has high εʹ and εʺ and it can promote polarization effects. Therefore, dielectric with higher moisture content can prevent microwave penetration under the polarization effect and then achieve higher εʹ and εʺ (Iwasawa et al., 1996). Studies about the dielectric properties indicate that the influence of high‐temperature treatment mainly comes from the water content of fruit biomass (Cao et al., 2018; Wen et al., 2014).…”