Highly Porous Scaffolds Made of Nanosized Hydroxyapatite Powder Synthesized from Eggshells

被引：27

作者：

Naga, S. M. ^{[1
]}

El-Maghraby, H. F. ^{[1
]}

Sayed, M. ^{[1
]}

Saad, E. A. ^{[2
]}

机构：

[1] Natl Res Ctr, Dept Ceram, Cairo, Egypt

[2] Ain Shams Univ, Fac Sci, Dept Chem, Cairo, Egypt

来源：

JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY | 2015年 / 6卷 / 03期

关键词：

Bioceramics; hydroxyapatite; porous scaffolds; mechanical properties; NANOCRYSTALLINE HYDROXYAPATITE; MICROSPHERES; SIZE;

D O I：

10.4416/JCST2014-00058

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanosize hydroxyapatite powder synthesized indirectly from eggshells is used to produce 3D porous scaffolds. They are fabricated via a polymeric sponge method. X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize the phase composition and grain size of the scaffolds, respectively. The results showed that the prepared powder is composed of pure hydroxyapatite with a grain size ranging between 35 and 122 nm. The prepared scaffolds calcined at 1250 degrees C for 2 h possess interconnected porosity (approximate to 73 %). The studied scaffolds showed suitable mechanical strength necessary for bone tissue engineering. Their crushing and bending strengths were 0.82 MPa and 1.72 MPa, respectively. Thin film XRD, SEM and EDS confirmed the presence of a rich bone-like apatite layer post-immersion in SBF on the scaffold's surface.

引用

页码：237 / 243

页数：7

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