| As the most powerful tool to reflect polarization, which is one of the basic physical and chemical properties of almost all systems, dielectric relaxation spectroscopy has been successfully applied in various scientific fields such as materials, chemistry, biology, medicine, and petrochemistry, and is increasingly being recognized as one of the most sensitive methods for system characterization.In this dissertation, the notion and the characteristics of dielectric relaxation spectroscopy with which most people in China are not unacquainted were introduced, the development of Maxwell-Wagner theory was simply reviewed, and whose applications to all kinds of systems were summarized. As for particle suspensions, people's recent understandings to the properties of interface were simply introduced, and the forms, the advantages, and the purposes of the application of dielectric relaxation spectroscopy to particle suspensions were briefly generalized. Based on the understanding above, experimental investigations were carried out for interfacial polarization relaxation of 0354 macroporous anion-exchange resin beads suspension through dielectric relaxation spectroscopy, and by combining Maxwell-Wagner theory with Hanai's method and Dukhin's, O'Brien's electrodynamic research work results.1.The influence of solution concentration to the dielectric behavior of the resin beads suspension I: Dielectric measurements were carried out for resin beads suspensions with different solution concentrations, and remarkable dielectric relaxations found around 106Hz showed regular concentration dependence. Dielectric parameters for all systems were obtained through fitting the dielectric relaxation spectroscopy by using Cole-Cole equations. Phase parameters for all systems were calculated by means of Hanai's method, and were interpreted through properties of the resin beads and the interfaces. Based on the dielectric and phase parameters, it was found through analysisthat, the observed dielectric relaxations were interfacial polarization relaxations, suchdielectric behaviors were related to solution concentrations or Debye lengths in quantity, and that the counterion concentration in electric double layer when resin beads dispersed in distilled water corresponded to that of 0.7mM in bulk solution.2 N The influence of solution concentration to the dielectric behavior of the resin beads suspension II: On the basis of Maxwell-Wagner theory, the polarization process of resin beads was described electrodynamically, the relaxation time of the suspension was quantitively analyzed, an induced dipolar moment model was proposed for concentrated particle suspensions, and the relationship between the induced dipolar moment and dielectric behavior of the systems was discussed in detail. The results showed that, the proposed model was reasonable and the magnitude of which was decided by surface potential and Debye length, relaxation time was decided by Debye length and properties of different counterions, while dielectric increment and conductivity increment were decided by the magnitude of the induced dipolar moment. Besides, surface potentials and Zeta potentials for all systems were also obtained, even though they were somewhat overestimated.3 The influences of other properties to the dielectric behavior of the resin beads suspension: Investigations were independently carried out for influences of coions, counterions, and organic solvents to interfacial polarization relaxations of resin beads suspensions, the results further testified that the analytical results above were reasonable. And it was found, that while Al3+ ions changed the surface potential and then influenced dielectric behavior of the suspension due to its being absorbed by resin beads surface, the influences of other general coions were neglectable, that counterions influenced dielectric behavior of the suspensions by their concentrations in the bulk solution, but the properties of themselves could not influence it observably, and that the properties of resin be...
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