Title :
Origin of heterocharge in polyethylene
Author :
Suh, Kwang S. ; Koo, Jung H. ; Lee, Seung Hyung ; Park, Jung Ki ; Takada, Tatsuo
Author_Institution :
Dept. of Mater. Sci., Korea Univ., Seoul, South Korea
Abstract :
The effects of low molecular weight chains of PE and chemical change during the sample preparation investigated in order to clarify the origins for heterocharge in LDPE which does not contain antioxidants. Both were found to affect the formation of space charge in LDPE. Low molecular weight chains of PE encourage the formation of heterocharge by polarization or migration mechanisms. The carbonyls formed at the surface of a LDPE sample during sample preparation reduce the heterocharge by an enhanced charge injection. The nature of the chemical change during sample preparation is also discussed in the text
Keywords :
Anodes; Cathodes; Chemicals; Compression molding; Oxidation; Polyethylene; Positron emission tomography; Surface waves; Temperature;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.413955
