Bilayered Calcium Phosphate/Calcium Sulfate Bone Graft Sustitutes

McQuinn, Michael; Orellana, Bryan R.; Puleo, David A.

doi:10.1016/j.joms.2014.06.375

Cited by 1 publication

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“…There is a strong potential application owing to good thermal stability, chemical resistance, satisfactory biocompatibility, and good compatibility with polymers. They are promising not only as reinforcing materials widely used in plastics, ceramics, rubber, and paper making [1][2][3][4], but also used in bone regeneration, bone graft substitutes, drug release scaffolds, and bioceramics [5][6][7][8]. Furthermore, the price of HH whiskers as reinforcing materials is only 1/200-1/300 that of SiC whiskers [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of calcium sulfate hemihydrate whiskers using oyster shells

et al. 2015

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Herein, the feasibility of preparing long and homogeneous hemihydrate (HH) whiskers using waste oyster shell was investigated. The whiskers formed from the sintered raw material had higher aspect ratios and more uniform morphology than non-sintered. The effect of reaction temperature, reaction time, and concentration were investigated. It was found that the optimum reaction temperature, reaction time, and concentration for stable and well-grown whiskers were 140°C, 5 h, and 4 wt%, respectively. Direct transition from calcium sulfate dehydrate (DH) to HH was detected by X-ray diffraction (XRD) patterns, and the result showed DH completely transformed to HH after 5 h. The preferred direction of growth along the c-axis was confirmed by XRD pattern, selected area diffraction pattern, and highresolution transmission electron microscopy (HRTEM).

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