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Glycerin Sodium Chloride Solution Dielectric Spectroscopy And Thermal Analysis Research

Posted on:2015-01-05Degree:MasterType:Thesis
Country:ChinaCandidate:F H XuFull Text:PDF
GTID:2180330467475312Subject:Optics
Abstract/Summary:PDF Full Text Request
The glass transition mechanism study has been one of the hot issues in the field of condensedmatter physics. The glass transition occurs and dynamics relaxation process with is closely relatedIn the liquid structure. Research into the structure of liquid and dynamics of relaxation processwill help in-depth analysis of glass transition. Glycerin is typically glass material. Mingle of otherions may be will affect the glass transition and may by studying ion motion obtain glycerolinformation on the relaxation dynamics. Vitrification research methods utilized almost all thephysical methods including differential thermal analysis and dielectric spectroscopy study of theglass transition is a very effective means. This paper uses simultaneous thermal analysis anddielectric spectroscopy methods to different glycerol solution of sodium chloride mass ratio ofmeasurement carried out a preliminary analysis of its glass transition process and its preliminaryanalysis of the glass transition process and ion diffusion process. Specific research work andconclusions are as follows.1)Using synchronous thermal analyzer measurement research to quality ratio was0/10000、1/10000、5/10000、10/10000…95/10000、100/10000series glycerin sodium chloride solution.With the increase of ion concentration glass transition temperature and peak temperature and thepeaks corresponding to the heat flow and quality loss has no obvious changeand volatile starttemperature is a downward trend in general.2) Using dielectric spectroscopy measurement that under Glycerol sodium chloride solutionon the mass ratio of1/10000...100/10000and it frequency range of100Hz,101Hz,102Hz,103Hz,104Hz,105Hz,106Hz and the433K to103K range temperature zones to1.5K/min for the Variabletemperature process rate. The complex dielectric constant*with temperature change rule.3) According to the research into the Debye relaxation theory and dielectric spectrum data.Analysis of the results various quality ratio of the glycerin sodium chloride solution averagerelaxation time a series along with the change of temperature T. By Series Measurement ofglycerol sodium chloride the average relaxation time with the specific Temperature relationshipuse compliance VFT by fitting can be obtained of a energy of TemperatureT0with averagerelaxation time0and Apparent activation energy A. Found with sodium chloride contentincrease the activation energy has a little changes.0change to with the increase in the chloridecontent the range of10-18to10-16second range time zones.T0is for108K.4)High dielectric spectrum analysis the results show that variation law in line with the iondiffusion behavior this shows that the high temperature dielectric spectrum is mainly caused byion diffusion, however, with the increase of glycerol content of sodium chloride in the solution,the higher the temperature of imaginary part of dielectric constant with frequency change law isdeviating from the ion diffusion regularity and the area such as the263K of low temperature andlow frequency always conform to the ion diffusion laws.5)From high permittivity imaginary part analysis the various series of glycerol sodiumchloride solution in the temperature range of345K to455K within the scope of diffusioncoefficient D changes with the temperature T and carries on the analysis. Different of quality ratioseries glycerin sodium chloride solution and the results show that with glycerol sodium chloridethe ion increase diffusion activation energy U is on the decline.
Keywords/Search Tags:Glycerol-Chlorine-sodium solution, glass transition, Dielectric spectroscopy, Ion diffusion
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