ISSN:
1435-1536
Schlagwort(e):
Poly(bis(β-phenoxyethoxy)phosphazene)
;
Ag-complex
;
dc andacconductivity
;
dielectriclosstangent
;
temperature andfrequencydependence
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
Notizen:
Abstract Electrical and dielectrical properties of poly(bis(β-phenoxyethoxy)phosphazene) (I) and its complexes with various content ratios of AgSO3CF3 to monomeric unit (0.25/1 (II) and 0.5/1 (III) in molar ratio) were investigated.Dc conductivity of respective samples at 18 °C were 6.1×10−12, 4.4×10−9, and 7.1×10−8 S/m.Dc conduction was considered to be due to ion hopping. Charge mobility ranged from 3×10−12 to 6× 10−11 m2/Vs depending on the applied field in sample II. In sample I, a tanδ peak was found which can be ascribed to molecular relaxation of main chains. The peak vanished upon introducing AgSO3 CF3. Temperature dependence of total conductivity (σ T ) measured byac method in the temperature range between −150 °C and 50 °C showed several peaks at the temperatures corresponding to the peak temperatures of tanδ. Total conductivities of respective samples at 100 kHz were 4.9×10−7 (69 °C), 1.7×10−4 (45 °C), and 1.5×10−4(40°C)S/m.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01414397
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