Scholarlink

<p>The complex permittivity spectra of an aqueous dulcitol ((2R,3S,4R,5S)-hexane 1,2,3,4,5,6-hexol) solution that is temperature-dependent have been investigated utilizing the Time Domain Reflectometry (TDR) technique within the frequency range of 10&#xa0;MHz to 30&#xa0;GHz. These experimental measurements have been conducted for varying volume fractions of water (<i>V</i><sub>water</sub>) present in the solution. The analysis of complex permittivity has been performed employing the Cole–Davidson model using the Least Squares Fitting method. The calculated dielectric constant for all temperatures and volume fraction of water initially increases and then decreases for <i>V</i><sub>water</sub> = 0.9832 and relaxation time initially increases upto <i>V</i><sub>water</sub> = 0.9735 and then decreases signifying heterogeneous molecular interactions. The Kirkwood Correlation Factor (KCF), Hydration parameter (<i>N</i><sub>hyd</sub>) and Thermodynamic parameters (Δ<i>H</i> and Δ<i>S</i>) have been calculated for the aqueous dulcitol system. The KCF values are increasing with <i>V</i><sub>water</sub> indicates the cooperative association among the interacting dipoles in the solution. The hydration parameter (<i>N</i>hyd) decreases with increase in molar concentration of the dulcitol. The obtained thermodynamic parameters show the endothermic process of the aqueous dulcitol solution. The refractive indices for the aqueous dulcitol solution have been calculated using the Abbemat refactometer for different temperatures.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Temperature Dependent Dielectric Relaxation and Hydration Studies of a Dulcitol–Water Binary Mixture Utilizing Time Domain Reflectometry

  • 期刊论文

  • 发表日期：

    2025年11月11日

查看全文
  • Shilpa S. Patange,
  • Aniket D. Bokhare,
  • Ashok C. Kumbharkhane

摘要

The complex permittivity spectra of an aqueous dulcitol ((2R,3S,4R,5S)-hexane 1,2,3,4,5,6-hexol) solution that is temperature-dependent have been investigated utilizing the Time Domain Reflectometry (TDR) technique within the frequency range of 10 MHz to 30 GHz. These experimental measurements have been conducted for varying volume fractions of water (Vwater) present in the solution. The analysis of complex permittivity has been performed employing the Cole–Davidson model using the Least Squares Fitting method. The calculated dielectric constant for all temperatures and volume fraction of water initially increases and then decreases for Vwater = 0.9832 and relaxation time initially increases upto Vwater = 0.9735 and then decreases signifying heterogeneous molecular interactions. The Kirkwood Correlation Factor (KCF), Hydration parameter (Nhyd) and Thermodynamic parameters (ΔH and ΔS) have been calculated for the aqueous dulcitol system. The KCF values are increasing with Vwater indicates the cooperative association among the interacting dipoles in the solution. The hydration parameter (Nhyd) decreases with increase in molar concentration of the dulcitol. The obtained thermodynamic parameters show the endothermic process of the aqueous dulcitol solution. The refractive indices for the aqueous dulcitol solution have been calculated using the Abbemat refactometer for different temperatures.