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Title: Nearly constant dielectric loss behavior in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable polyester
Authors: Ke, S
Huang, H 
Ren, L
Wang, Y
Issue Date: 1-May-2009
Source: Journal of applied physics, 1 May 2009, v. 105, no. 9, 096103, p. 1-3
Abstract: The measurement of dielectric spectroscopy over a broad frequency range of 0.01–10⁷ Hz has been conducted to examine the segmental motions in poly[3-hydroxybutyrate-co-3-hydroxyvalerate] (PHBV) biopolymers. The ac conductivity at either low temperatures or high frequencies is almost temperature independent, indicating clearly that the nearly constant loss (NCL) phenomenon also takes place in polymers. The respective data were analyzed by adding a NCL term to the Jonscher relation. NCL in PHBV is discussed to be originated from the vibrational motion model. PHBV may have potential application as a biodegradable dielectric material.
Keywords: Biodegradable materials
Dielectric losses
Dielectric materials
Electrical conductivity
Polymers
Publisher: American Institute of Physics
Journal: Journal of applied physics 
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.3125271
Rights: © 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in S. Ke et al., J. Appl. Phys. 105, 096103 (2009) and may be found at http://jap.aip.org/resource/1/japiau/v105/i9/p096103_s1
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