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Effect of Etching Treatment on Thermally Stimulated Current in Spherulitic Polypropylene
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Charging saturation and thermally stimulated currents (TSCs) were studied for positively corona-charged spherulitic and nonspherulitic polypropylene films which were etched with a mixture of H2SO4and K2Cr2O7. From the experimental results of the etching treatment effect on the TSC spectra, it is concluded that the charging saturation is caused by a decrease in the number of traps located in the amorphous part of the polymer. For spherulitic polypropylene, estimated values of trap density which is effective at room temperature were 2.5-1.1×1014[cm-3], depending on the extent of etching treatment. The densities of traps located in the crystalline parts of the nonspherulitic and spherulitic polypropylene were 0.93×1014[cm-3] and 0.76×1014[cm-3], respectively.
Title: Effect of Etching Treatment on Thermally Stimulated Current in Spherulitic Polypropylene
Description:
Charging saturation and thermally stimulated currents (TSCs) were studied for positively corona-charged spherulitic and nonspherulitic polypropylene films which were etched with a mixture of H2SO4and K2Cr2O7.
From the experimental results of the etching treatment effect on the TSC spectra, it is concluded that the charging saturation is caused by a decrease in the number of traps located in the amorphous part of the polymer.
For spherulitic polypropylene, estimated values of trap density which is effective at room temperature were 2.
5-1.
1×1014[cm-3], depending on the extent of etching treatment.
The densities of traps located in the crystalline parts of the nonspherulitic and spherulitic polypropylene were 0.
93×1014[cm-3] and 0.
76×1014[cm-3], respectively.
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