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arXiv 1208.4229cond-mat.mes-hall
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PVC的物理化学和化学改性及其对电性能的影响

Physical-chemical and chemical modification of PVC and their effect on the electrical properties of the polymer

V. I. Krystob, L. A. Apresyan, D. V. Vlasov, T. D. Vlasova

摘要:

与初始抗静电水平相比,增加PVC的静电传导性的可能性,对于用有效增塑剂-所谓的A型改性剂获得的PVC塑化物,以及用于形成具有共轭双键的系统的共聚物的部分热脱氯化氢进行了研究。为了分析电导率与双共轭键的依赖性,提出了掺杂方法,其中化学活性掺杂剂嵌入在聚合物样品的两个薄膜之间,不接触,并且因此不与金属电极相互作用。在该方案中,发现对于在它们之间的边界上折叠两层部分脱氯化氢的PVC,形成阻挡层,这可以通过用碘掺杂来消除,从而显著增加电导率。在A型改性剂增塑PVC的情况下不会出现该层。这种层的存在可以被解释为与双共轭键的传导机制的存在相关联的近表面空间不均匀性的标志。

英文摘要:

The possibilities to increase the static conductivity of PVC compared to the initial antistatic level, for PVC plasticate obtained with effective plasticizer - a so called modifier of type A, and partial thermal dehydrochlorination for formation of a copolymer with a system of conjugated double bonds are investigated. To analyze the dependence of electrical conductivity from double conjugated bonds the doping method is proposed, in which a chemically active dopant is embedded between two thin films of the polymer sample, not touching, and, accordingly, not interacting with the metal electrodes. In this scheme it is found, that the for folding of two layers of partly dehydrochlorinated PVC on the border between them the barrier layer is formed, which can be eliminated by doping with iodine giving significant increase in electrical conductivity. This layer does not arise in the case of type A modifier plasticized PVC. The presence of such layer can be interpreted as a sign of the near-surface spatial heterogeneity associated with the presence of conduction mechanism of double conjugated bonds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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