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首页> 外文期刊>Physica, B. Condensed Matter >Conduction mechanism in electron beam-irradiated unplasticized PVC/PVA copolymer films under high electric field
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Conduction mechanism in electron beam-irradiated unplasticized PVC/PVA copolymer films under high electric field

机译：高电场下电子束辐照未增塑的PVC / PVA共聚物薄膜的导电机理

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摘要

In the present work, the conduction mechanism in the electron-irradiated unplasticized poly(vinyl chloride) (UPVC)/poly(vinyl alcohol) (PVA) films has been investigated by measuring their I?V characteristic curves. The I?V measurements have been carried out at applied electric fields up to 20 kV/cm. Specimens of UPVC/PVA of 230 μm thickness were irradiated with a 1.5 MeV electron beam in air to different doses of 30, 135, 540 and 1080 kGy, respectively. The I?V characteristics for the films show a direct proportionality between the current values and the irradiation dose. The temperature dependence of the I?V characteristics (in the temperature range of 293–353 K) has also been studied. It has been found that the density of the localized state values is inversely proportional to the irradiation dose. The results reveal a non-ohmic behavior in this regime of temperature range providing the existence of space-charge-limited conduction in UPVC/PVA films.
机译：在目前的工作中，已经通过测量它们的IV特性曲线研究了电子辐照的未增塑的聚氯乙烯（UPVC）/聚乙烯醇（PVA）薄膜的导电机理。 I？V测量是在高达20 kV / cm的施加电场下进行的。用1.5 MeV电子束在空气中分别以30、135、540和1080 kGy的不同剂量辐照230μm厚度的UPVC / PVA样品。薄膜的I？V特性表明电流值和辐照剂量之间成正比。 I？V特性的温度依赖性（在293–353 K的温度范围内）也已得到研究。已经发现，局部状态值的密度与照射剂量成反比。结果表明，在这种温度范围内，非欧姆行为提供了在UPVC / PVA薄膜中存在空间电荷受限的导电性。

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