Dielectric relaxation and hydrogen bonding studies of 1-iodobutane 1,4-dioxane mixture using TDR technique

Abstract

Complex dielectric measurements by using the Time Domain Reflectometry technique between the frequency range 10 MHz to 30 GHz have been accomplished for different concentrations of 1-iodobutane (IDB) and 1, 4-Dioxane (DX) binary mixtures at 5 °C to 25 °C temperatures. Debye model was used to fit the complex permittivity spectra of IDB-DX binary mixture. The Luzar model is applied to calculate the average number of hydrogen bonds in IDB-IDB and IDB-DX molecules. The measured value of hydrogen bond density is found to be maximum for this binary mixture at dioxane concentration V_DX ≈ 0.7. To study the dielectric behavior and to observe the modification in the strength of hydrogen bond in the presence of other nonpolar molecule is the main aim of the proposed work. Measurement of Kirkwood correlation factor and Bruggeman factor provide the valuable information regarding the formation of hydrogen bonded molecular multimers and intermolecular interaction in the binary mixture. Information on the molecular interactions in binary mixtures is also provided by the study.

Keywords:

• Time Domain Reflectometry (TDR)
• dielectric relaxation
• complex permittivity spectra
• static dielectric constant
• Luzar model
• Kirkwood correlation factor and Bruggeman factor

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Acknowledgments

We gratefully acknowledge the Department of Science and Technology, New Delhi for their financial support (Project number DST PROJECT SB/S2/LOP-032/2013) and School of Physical Sciences, S.R.T.M. University, Nanded, Maharashtra for providing the instrumental facility. Author AGG is thankful to Chhatrapati Shahu Maharaj Research Training and Human Development Institute (SARTHI), Pune, Maharashtra for financial assistance in the form of fellowship and also thank to Garad Nitin P., Saknure S. for their helpful suggestions.