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Showing 1 to 9 of 9 for “"Dielectric dispersion"”.
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Dielectric dispersion of ethyl cellulose solutions
… acetate in solution. The applicability of the dielectric dispersion method to other cellulosics was the next step in the development of this new procedure. Ethyl celluloee fractions were refractionated by a fractional precipitation procedure in order to obtain fractions that were homogeneous …
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Dielectric dispersion in dilute cellulose acetate solutions
… revealed that some polymer solutions exhibit dielectric dispersion (variation of the dielectric constant with frequency) which is apparently related in some way to the molecular weight of the polymer (1) (2) (3). One of these investigations (1) was carried out on solutions to cellulose acetate …
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Dielectric dispersion of poly(vinyl acetate) solutions
The dielectric dispersion of poly(vinyl acetate) solutions was studied in an attempt to relate this behavior to the chemical nature of the material. The bridge method was employed in which capacitance measurement of solutions were made over a frequency range of 400 cycles to 500 kilocycles. The …
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Correlation of the distribution curve with the dispersion curve of cellulose nitrate
The dielectric-dispersion, curve of cellulose nitrate may be obtained over a 1ow frequency range in h-butyl acetate. The parallel resistance method is used for capacitance measurements is a nickel cell. Comparison of the distribution curve and the dispersion curve above a distinct similarity …
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Microstructure and Electrical Properties of Mocvd-Derived Perovskite Lead Zirconium(x) Titanium(1-X) Oxygen(3) and Lead (Scandium Tantalum)(1-X) Titanium(x) Oxygen(3) Thin Films on Lanthanum Nickel Oxide Electrode-Buffered Silicon
… ferroelectric thin film was characterized by its dielectric dispersion. Moreover, effect of an AC field on the dielectric relaxation behavior of the relaxor PSTT thin films was studied. The results were qualitatively explained by the current theories of relaxor ferroelectrics. Pyroelectric …
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Low Temperature Behavior of Potassium and Sodium-Silicate Glasses
… thermal expansion, thermal conductivity, and dielectric dispersion, each sample also had known glass transition temperature, mass density, phonon velocity, and concentration and density fluctuations. The results of this study have provided further support for an empirical relationship between …
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Dynamic electromechanical measurements of carbon black loaded SBR
… The experiments were divided into four parts: dielectric measurement, loss modulus and phase angle measurements, temperature rise measurement during stress cycling, and dynamic conductivity measurement. It is established that there are three distinct conduction regimes existing at carbon black …
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Soil and Site Characterization Using Electromagnetic Waves
… fluid salt concentration simultaneously from the dielectric spectrum; (3) Deduction of the wide-frequency electromagnetic properties of a soil by measuring its responses to a step pulse voltage using time domain reflectometry (TDR); (4) Establishment of the relationships between the specific …