TSC from corona-charged high-density polyethylene and the effects of oxidation

Publisher Website
Google Scholar
Abstract
The short-circuit thermally stimulated current of corona-charged high-density polyethylene (HDPE) shows two peaks of a different polarity. The current of the high-temperature TSC peak flows in the same direction as the charging current. (It is therefore called an anomalous peak.) The anomalous TSC is explained in terms of the release of injected space charge carriers and the partial blocking of the metal-polymer contact. Oxidised HDPE shows the anomalous TSC peak at a higher temperature than non-oxidised HDPE. The oxidation also shifts the decay curve of the surface potential to a higher temperature. These results indicate that the oxidation introduces deep traps.