Dielectric Property Studies of Biologically Compatible Brushite Single Crystals Used as Bone Graft Substitute

• 作者: M. P. Binitha P. P. Pradyumnan
• 来源期刊: 生物材料与纳米技术(英文)
• 学科: 化学
• 关键词: BONE GRAFTS BRUSHITE GEL Growth Dielectric Properties AC CONDUCTIVITY
• 年，卷（期）: 2013,（2）
• 页码范围: 119-122
• 页数: 4页
• 分类号: O6

摘要

The electrical characterization of bone is essential for the better understanding of the role of electrical stimulation in bone remodeling. Calcium Hydrogen Phosphate Dihydrate or brushite (CaHPO4 2H2O) has been used in bone substitution owing to their fast resorption under physiological condition. Brushite is a suitable matrix for osteoconductive bone grafts. In this work, Calcium Hydrogen Phosphate single crystals have been grown by single diffusion gel growth technique. The powder XRD studies revealed the monoclinic structure of the grown crystals. The vibrational analysis of the crystals is done with FTIR spectroscopy and the major functional groups and their assigned vibrations are discussed. The frequency dependence of dielectric constant and ac conductivity at different temperatures have been studied in detail. This study shows decrease in the dielectric constant with the increase in frequency and temperature. The variation of ac conductivity is found to be increasing with frequency and decreasing with temperature.