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The influence of temperature on the electrical resistivity of the cellular polypropylene and the effect of activation energy.

Vila F, Dhima P, Mandija F - Springerplus (2013)

Bottom Line: This methodology includes a three-electrode system, which allows us to estimate the resistivity of the samples, based on their corresponding total resistances.The electric fields applied for a time interval of 1 min are of the order of 200 kVm (-1).The methodology and equipment used, as well as the satisfying accordance with the results, found out directly or indirectly with the consulted literature, confirm the high accuracy of experimental measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, University of Tirana, Tirane, Albania.

ABSTRACT
In this paper, we determine the surface and volume electrical resistivity of the 50 μm thick cellular polypropylen (VHD50), for the temperature range 393-453 K. For this we use a contemporary methodology, which consist of a voltage measurement across the sample, with a known current flowing through it. This methodology includes a three-electrode system, which allows us to estimate the resistivity of the samples, based on their corresponding total resistances. The electric fields applied for a time interval of 1 min are of the order of 200 kVm (-1). The order of magnitude of surface and volume electrical resistivity is 10(13) Ω and 10(11) Ωm, respectively. For both types of the resistivity, the temperature dependence is an increasing or decreasing exponential function, depending on the type of the activation energy, (its average value for the temperature range mentioned above is 41,20 kJmol (-1)), totally confirmed by the corresponding theoretical interpretation, conditioned by the ionic conduction. The methodology and equipment used, as well as the satisfying accordance with the results, found out directly or indirectly with the consulted literature, confirm the high accuracy of experimental measurements.

No MeSH data available.


Related in: MedlinePlus

Schematic diagram for measuring the surface electrical resistivity.
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Fig1: Schematic diagram for measuring the surface electrical resistivity.

Mentions: The schematic diagram of experimental measurements for the determination of the surface electrical resistivity is presented in Figure 1. It is important for the guard electrode to have a positive potential in order to gather electrons on it.Figure 1


The influence of temperature on the electrical resistivity of the cellular polypropylene and the effect of activation energy.

Vila F, Dhima P, Mandija F - Springerplus (2013)

Schematic diagram for measuring the surface electrical resistivity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4320245&req=5

Fig1: Schematic diagram for measuring the surface electrical resistivity.
Mentions: The schematic diagram of experimental measurements for the determination of the surface electrical resistivity is presented in Figure 1. It is important for the guard electrode to have a positive potential in order to gather electrons on it.Figure 1

Bottom Line: This methodology includes a three-electrode system, which allows us to estimate the resistivity of the samples, based on their corresponding total resistances.The electric fields applied for a time interval of 1 min are of the order of 200 kVm (-1).The methodology and equipment used, as well as the satisfying accordance with the results, found out directly or indirectly with the consulted literature, confirm the high accuracy of experimental measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, University of Tirana, Tirane, Albania.

ABSTRACT
In this paper, we determine the surface and volume electrical resistivity of the 50 μm thick cellular polypropylen (VHD50), for the temperature range 393-453 K. For this we use a contemporary methodology, which consist of a voltage measurement across the sample, with a known current flowing through it. This methodology includes a three-electrode system, which allows us to estimate the resistivity of the samples, based on their corresponding total resistances. The electric fields applied for a time interval of 1 min are of the order of 200 kVm (-1). The order of magnitude of surface and volume electrical resistivity is 10(13) Ω and 10(11) Ωm, respectively. For both types of the resistivity, the temperature dependence is an increasing or decreasing exponential function, depending on the type of the activation energy, (its average value for the temperature range mentioned above is 41,20 kJmol (-1)), totally confirmed by the corresponding theoretical interpretation, conditioned by the ionic conduction. The methodology and equipment used, as well as the satisfying accordance with the results, found out directly or indirectly with the consulted literature, confirm the high accuracy of experimental measurements.

No MeSH data available.


Related in: MedlinePlus