Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33742
Title: Investigations on Polyvinyl Chloride - Carbon black blends
Authors: Hui, D
Mircea, C
Lau, KT 
Sankar, J
Chipara, MD
Notingher, P
Panaitescu, D
Keywords: Electron spin resonance
Percolation threshold Variable range hopping
Polarons
Polyvinyl chloride-black carbon composite
Issue Date: 2004
Source: Science and Engineering of Composite Materials, 2004, v. 11, no. 1, p. 19-26 How to cite?
Journal: Science and Engineering of Composite Materials 
Abstract: Electron spin resonance and de electrical studies on polyvinyl chloride-black carbon composites are reported. The percolation threshold of conductivity occurs at about 5% phr black carbon. The resonance line shape and position rules out the contribution of high spin bipolarons to the dc conductivity of these composites while the excellent agreement between the dependence of ESR and dc conductivity on black carbon loading indicates that the dc conductivity of polyvinyl chloride/black carbon composites is due to polarons. This conclusion is supported by the temperature dependence of the resonance line width, which reveals that the dynamics of electronic spins is consistent with the predictions of the Variable Range Hopping description.
URI: http://hdl.handle.net/10397/33742
ISSN: 0334-181X
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