The influence of static and dynamic structures on mechanisms of charge transport was investigated by means of isothermal current-voltage dependence for various polymeric materials systems based on poly(vinylchloride) and polyethylene. Poly(vinylchloride) was chemically dehydrochlorinated, thereby creating polyacetylene structures. These samples showed ten-decades-at-best higher conductivity than the precursor polymer in dependence on the concentration of double bonds. Electron spin resonance measurements supported the interpretation of electrical conduction by a hopping transport of electrons. The results obtained for dehydrochlorinated poly(vinylchloride) are compared with model mechanisms of charge transport in polyethylene and partial crystalline polyethylenes as borderline cases

The current understanding of the electrical properties of polyethylene and poly(viny1idenc fluoride) scrviug as model substances or nonpolar and polar polymers is rcviewed. Experimental results on the chargc transport process in PE and field induced structure transitions as well as pyroclectric and piezoelectric properties of poly(viny1idenc fluoride) are presented.

The electrical dc-properties of the polymer insulator polyethylene are summarized taking into consideration the polymer specific aspects. The electrical dc-conductivity must be discussed as a transport of injected electronic excess charge carriers. The results of measurements of the charge carrier mobility, current kinetics, surface potential kinetics and thermally-stimulated currents are presented.

The charge carrier mobility of high-density polyethylene (HDPE) has been investigated with identical samples by six experimental methods, some of them being applied to HDPE for the first time. The experimental conditions and results are summarized and discussed. The characteristics of the identical samples used in the experiments were carefully considered. The mobilities were measured by both non-pulse and pulse methods and were found to be of the order of 10−13–10−15 m2 V−1 s−1 and 10−8 m2 V−1 s−1, respectively, but none of these methods is preferred. Any measuring technique reflects a specific aspect of the charge carrier transport. It was shown that, in identical samples, the fast and slow mobility components can both be observed. The differences in the results obtained by these methods are discussed.

The prerequisites for simulating the charge transport by MONTE CARLO methods are summarized and tested by experiment with PE. For this simulation calculations space charges have to be considered, particularly in interpreting the long-time kinetics. For them MONTE CARLO methods were found to be insufficient. In investigating the long-time kinetics by surface potential measurements deviations from the dispersive behaviour were observed.

physica status solidi (a)Volume 61, Issue 1 p. K83-K86 Short Note Estimation of the charge carrier mobility in high density polyethylene by means of kinetic methods L. Brehmer, L. Brehmer Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorM. Pinnow, M. Pinnow Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorH. von Berlepsch, H. von Berlepsch Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorM. Kornelson, M. Kornelson Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorW. Stark, W. Stark Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this author L. Brehmer, L. Brehmer Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorM. Pinnow, M. Pinnow Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorH. von Berlepsch, H. von Berlepsch Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorM. Kornelson, M. Kornelson Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this authorW. Stark, W. Stark Institut für Polymerenchemie der Akademie der Wissenschaften der DDR, Teltow-Seehof Search for more papers by this author First published: 16 September 1980 https://doi.org/10.1002/pssa.2210610160Citations: 2 Kantstr. 55, DDR-1530 Teltow-Seehof, DDR. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume61, Issue116 September 1980Pages K83-K86 RelatedInformation