Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20234
Title: Dielectric behaviors of PHBHHx-BaTiO3 multifunctional composite films
Authors: Ke, S
Yang, Y
Ren, L
Wang, Y
Li, Y
Huang, H 
Keywords: Polymer-matrix composites
Electrical properties
Dielectric spectroscopy
Issue Date: 2012
Publisher: Pergamon Press
Source: Composites science and technology, 2012, v. 72, no. 2, p. 370-375 How to cite?
Journal: Composites science and technology 
Abstract: Multifunctional polymeric composites were investigated for potential use in high energy storage capacitors and tissue engineering. The polymeric composites were fabricated by employing biodegradable polyester, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx), as the matrix. Ferroelectric BaTiO3 ceramic powders were added to the composites as fillers. The dielectric spectroscopy of the composites was measured over a wide frequency range (10(0)-10(7) Hz) from -100 to 60 degrees C. The composition dependent dielectric behavior was modeled by a self-consistent effective medium theory. A percolation threshold of 0.367 was observed in the composites. The glass transition relaxation of the composite was also discussed by comparing the popular Vogel-Fulcher-Tammann law with a new glass model. The composites show attractive ferroelectricity and piezoelectricity for biomedical applications.
URI: http://hdl.handle.net/10397/20234
ISSN: 0266-3538
EISSN: 1879-1050
DOI: 10.1016/j.compscitech.2011.11.028
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