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<p>The complex permittivity spectra for the binary system maltitol‐water, within the frequency spectrum of 10&#xa0;MHz 30&#xa0;GHz have to been investigated employing the Time Domain Reflectometry (TDR). An analytical approach was undertaken to determine the static dielectric constant (ε<sub>0</sub>) and relaxation time (τ) corresponding to various volume fractions of water (V<sub>water</sub>) across various temperature conditions. These dielectric parameters were accurately fitted to the Cole–Davidson model to elucidate the relaxation dynamics. The Refractive Indices, Kirkwood Correlation Factor (KCF), Hydration number (N<sub>hyd</sub>) and Thermodynamic parameters (∆H and ∆S) have been calculated thereby elucidating the intermolecular interactions present within the binary mixture. The observed increase in the dielectric constant coupled with a reduction in relaxation time, accompanying with an increase in the water content of the solution, suggests that these properties vary with solute concentration and temperature, shaped by the molecular structure of the solute. The empirically obtained static dielectric constants exhibit a strong correlation with the theoretical values, thereby substantiating the validity of the Alenka Luzar hydrogen-bonding model within this framework.</p>

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Microwave dielectric dispersion and hydration studies of maltitol‐water binary mixture using time domain reflectometry

  • 期刊论文

  • 发表日期：

    2026年5月3日

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

摘要

The complex permittivity spectra for the binary system maltitol‐water, within the frequency spectrum of 10 MHz 30 GHz have to been investigated employing the Time Domain Reflectometry (TDR). An analytical approach was undertaken to determine the static dielectric constant (ε0) and relaxation time (τ) corresponding to various volume fractions of water (Vwater) across various temperature conditions. These dielectric parameters were accurately fitted to the Cole–Davidson model to elucidate the relaxation dynamics. The Refractive Indices, Kirkwood Correlation Factor (KCF), Hydration number (Nhyd) and Thermodynamic parameters (∆H and ∆S) have been calculated thereby elucidating the intermolecular interactions present within the binary mixture. The observed increase in the dielectric constant coupled with a reduction in relaxation time, accompanying with an increase in the water content of the solution, suggests that these properties vary with solute concentration and temperature, shaped by the molecular structure of the solute. The empirically obtained static dielectric constants exhibit a strong correlation with the theoretical values, thereby substantiating the validity of the Alenka Luzar hydrogen-bonding model within this framework.