Dielectric dispersion and thermodynamic behavior of stearic acid binary mixtures with alcohol as co-solvent using time domain reflectometry

作     者：M.Maria Sylvester T.Ganesh D.J.S.Anand Karunakaran P.Senthilkumar Praveen G.Hudge A.C.Kumbharkhane 

作者机构：PG&Research Department of PhysicsBishop Heber CollegeBharthidasan University Tiruchirapalli 620017Tamil NaduIndia PG&Research Department of PhysicsRajah Serfoji Government College Bharthidasan University Thanjavur 613005Tamil NaduIndia Department of PhysicsSaranathan College of Engineering Tiruchirapalli 620012Tamil NaduIndia Department of PhysicsS.I.C.E.Society's Degree College of Arts Science and CommerceAmbernathThaneMaharashtraIndia School of Physical SciencesSwami Ramanad Teerth Marthwada University NandedMaharashtraIndia 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2017年第7卷第4期

页      面：34-40页

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

主　　题：TDR dielectric relaxation stearic acid thermodynamic parameters FT-IR 

摘      要：Dielectric permittivity and relaxation dynamics of binary and ternary mixture of stearic acid on various concentration and their thermodynamic effects are *** static dielectric constant(ε_(0)),dielectric permittivity(ε′)and dielectric loss(ε″)are found by bilinear *** relaxation time(τ),dielectric strength(Δε)and the excess permittivity(ε^(E))are *** thermodynamic parameters such as enthalpy(ΔH),entropy(ΔS)and Gibb s free energy(ΔG)are *** significant changes in dielectric parameters are due to the intramolecular and intermolecular interactions in response to the applied *** permittivity spectra of stearic acid–alcohol in the frequency range of 10MHz to 30 GHz have been measured using picoseconds Time Domain Reflectometry(TDR).The dielectric parameters(ε_(0),ε′,ε″)are found by bilinear calibration *** of temperature in intermolecular interaction and the relaxation process are also *** FT-IR spectral analysis reveals that the conformation of functional groups and formation for hydrogen bonding are present in both binary and ternary mixtures of stearic acid.