Dielectric relaxation and hydrogen bonding interaction in xylitol–water mixtures using time domain reflectometry

Rander, D.N.; Joshi, Y.S.; Kanse, K.S.; Kumbharkhane, A.C.

doi:10.1007/s12648-015-0728-2

Cited by 10 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Water has a high dielectric constant and, therefore, it largely influences the dielectric properties of the concentrate. The dielectric relaxation in binary mixtures of sugar/water at selected temperatures and concentrations were studied using time domain reflectometry (TDR) technique (Rander, Joshi, Kanse, & Kumbharkhane, , ). It is reported that the static dielectric constants increased with increasing the amount of sugars in solvents.…”

Section: Introductionmentioning

confidence: 99%

Dielectric, thermal, and rheological properties of inulin/water binary solutions in the selected concentration

Ahmed

Thomas

Khashawi

2018

J Food Process Engineering

View full text Add to dashboard Cite

Inulin-a prebiotic has many applications in the food and pharmaceutical industries for texture modification and replacement of fat/sugar. In this study, thermal, rheological, and dielectric properties of inulin solutions were studied in a wide range of concentrations (5-50% w/v). Inulin is readily dissolved in water in low concentrations (< 20%), and exhibited Newtonian flow behavior, and the dielectric spectra were close to the pure water. The dielectric constant, ε 0 of concentrated inulin (40-50%) showed frequency independency (500-1,150 MHz) whereas the loss factor, ε 00 increased with frequency. Oscillatory rheology of concentrated inulin solutions at selected temperatures showed solid-like behavior (G 0 > G 00 ), and the mechanical rigidity increased exponentially with the concentration. During thermal scanning of inulin concentrates (30-50%), two glass-like transitions T 0 g were detected (−74.98 to −72.28 C;−24.25 to −23.45 C), which were independent of the concentration. The obtained information will be useful for product development and structural characterization of inulin-incorporated food products. Practical applicationsIncorporation of soluble fiber like inulin into food products has proven health effect. Knowledge of flow behavior and glass transition temperatures of inulin at selected concentrations will provide a better understanding of food formulation, transport, and storage. Dielectric properties of inulin solutions would help to employ microwave/radiofrequency heating of formulated foods.The information presented in the present work should be useful to the food and pharmaceutical industries for early prediction of food quality and process engineering.

show abstract

Section: Introductionmentioning

confidence: 99%

Dielectric, thermal, and rheological properties of inulin/water binary solutions in the selected concentration

Ahmed

Thomas

Khashawi

2018

J Food Process Engineering

View full text Add to dashboard Cite

show abstract

“…From this it is obvious that the strength of hydrogen bonding among EGMME and ethanol molecules is increasing. So, in these binary mixtures the structure of ethanol is concluded to be modified in presence of EGMME molecules and exhibits the cooperative nature among unlike molecules [32].…”

Section: Thermodynamic Propertiesmentioning

confidence: 96%

H-bonding interaction study for binary mixtures of methyl cellosolve and ethanol: a dielectric, FTIR spectroscopic and volumetric approach

Pabboj,

Lakhamawad,

Jinklor

et al. 2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

The dielectric measurement of neat ethylene glycol monomethyl ether (EGMME), neat ethanol and their binary mixtures have been carried out using time domain technique in frequency range of 10 MHz to 50 GHz at the temperature range from 10 °C to 25 °C with a difference of 5 °C. The frequency domain technique within the frequency range of 20 Hz to 2 MHz is used to obtain complex dielectric permittivity ɛ*(ω), electrical modulus M*(ω), complex electrical conductivity σ*(ω) and loss tangent (tan δ) at 25 °C. The dielectric spectra obtained using TDR technique are fitted in Cole-Davidson model to extract the dielectric parameters such as static dielectric permittivity (εs), relaxation time (τ) and asymmetric distribution parameter (β). These relaxation parameter values are used to predict intermolecular hydrogen bonding between EGMME and ethanol molecules. Furthermore, the inter-molecular interactions through H-bonding between EGMME and ethanol molecules have been confirmed and discussed using Kirkwood correlation factor, excess permittivity, thermodynamic parameter, Bruggeman factor, excess molar volume, excess dielectric permittivity at high frequency and fourier transform infrared (FTIR) spectra.

show abstract

“…It is noticed that the molar free energy of activation for viscous flow (ΔF η ) is greater than the free energy activation over dielectric relaxation (ΔF τ ) .It elucidates that the viscous flow involved both the rotational and translation vibration of the molecules. [7][8][9][10] . The result reveals that the strength of molecular interaction depends upon proton donating ability of alcohols which is obtained in the order of 1-methanol<1-ethanol<1-propanol.…”

Section: Table 1-dielectric Constant(ε 0) Relaxation Time(τ) Of Propmentioning

confidence: 99%

Intermolecular Interaction Studies of Binary Liquid Mixtures Using Time Domain Reflectometry at 303K Sampandam Elangovan and Yilak Alemu Abbo

2018

IJCTR

View full text Add to dashboard Cite

: Intermolecular interactions of propylformate with 1-methanol, 1-ethanol and 1-propanol have been studied at micro frequency range 9.36 GHz at 303K. Dielectric constant, dielectric losses were determined. Relaxation time was calculated using Higasi and Cole-Cole method. Dielectric constant and Relaxation time decreased while concentration of alcohols in propyl formate system. Strength of dissociation of liquid mixtures was based on the carbon chain length of alcohols with propyl formate which was in the order of 1-methanol<1-ethanol<1-propanol.

show abstract

Dielectric relaxation and hydrogen bonding interaction in xylitol–water mixtures using time domain reflectometry

Cited by 10 publications

References 22 publications

Dielectric, thermal, and rheological properties of inulin/water binary solutions in the selected concentration

Dielectric, thermal, and rheological properties of inulin/water binary solutions in the selected concentration

H-bonding interaction study for binary mixtures of methyl cellosolve and ethanol: a dielectric, FTIR spectroscopic and volumetric approach

Intermolecular Interaction Studies of Binary Liquid Mixtures Using Time Domain Reflectometry at 303K Sampandam Elangovan and Yilak Alemu Abbo

Contact Info

Product

Resources

About