کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
820878 | 906728 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dielectric behaviors of PHBHHx–BaTiO3 multifunctional composite films Dielectric behaviors of PHBHHx–BaTiO3 multifunctional composite films](/preview/png/820878.png)
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 (100–107 Hz) 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.
Journal: Composites Science and Technology - Volume 72, Issue 2, 18 January 2012, Pages 370–375