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 BaTiO3ceramic powders were added to the composites as fillers. The dielectric spectroscopy of the composites was measured over a wide frequency range (100-107Hz) from -100 to 60°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 Vögel-Fulcher-Tammann law with a new glass model. The composites show attractive ferroelectricity and piezoelectricity for biomedical applications.
Original language | English |
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Pages (from-to) | 370-375 |
Number of pages | 6 |
Journal | Composites Science and Technology |
Volume | 72 |
Issue number | 2 |
DOIs | |
Publication status | Published - 18 Jan 2012 |
Keywords
- A. Polymer-matrix composites
- B. Electrical properties
- C. Dielectric spectroscopy
ASJC Scopus subject areas
- Ceramics and Composites
- Engineering(all)