Title :
Thermodynamical properties and low frequency relaxation of interfacial space charges in polyethylene and polyethylene blends
Author :
Aladenize, B. ; Héliodore, F. ; Le Méhauté, A. ; Coelho, R.
Author_Institution :
Corp. Res. Center, Compagnie Gen. d´´Electr., Marcoussis, France
Abstract :
An effort was made to determine whether the intimate structure of a polymer blend is homogeneous or fractal with phase segregation. This investigation involved the analysis of dielectric relaxation in polyethylene-polycarbonate blends in terms of the model of dissipation in fractal media. The effect of room-temperature aging on internal boundaries in polyethylene and polyethylene-polycarbonate blends was investigated. The results obtained are correlated with the presence of interphases in the bulk, as revealed by thermodynamical analysis
Keywords :
ageing; dielectric relaxation; polymer blends; polymers; space charge; fractal; homogeneous; interfacial space charges; internal boundaries; interphases; low frequency relaxation; phase segregation; polyethylene; polyethylene blends; polyethylene-polycarbonate blends; room-temperature aging; thermodynamical analysis; Amorphous materials; Annealing; Crystallization; Dielectrics; Electrodes; Fractals; Frequency; Polyethylene; Polymers; Space charge;
Conference_Titel :
Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
DOI :
10.1109/ELINSL.1990.109782
