Dynamic Mechanical Properties of Calcium Alginate-Hydroxyapatite Nanocomposite Hydrogels
Dynamic Mechanical Properties of Calcium Alginate-Hydroxyapatite Nanocomposite Hydrogels
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DOI：
10.1166/sam.2010.1092
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发表时间：
2010-06-01
影响因子：
0.9
通讯作者：
Mouzakis, Dionysios E.
中科院分区：
文献类型：
--
作者：
Bouropoulos, Nikolaos;Stampolakis, Alexandros;Mouzakis, Dionysios E.
采用沉淀法成功地合成了具有针状纳米晶的纳米级高结晶度羟基磷灰石(Hap)。Hap粉末被进一步用于增强水凝胶和制备潜在的支架应用的纳米复合材料。动态力学分析表明，只需添加0.32wt%的Hap(理论上为0.5wt%)即可使水凝胶/Hap的抗压动态刚度提高400%。另一方面，在相同重量分数的Hap下，0.32wt%的Hap样品也有一定的改善。HAP重量分数高于0.5wt%会导致性能恶化。
Highly crystalline hydroxyapatite (Hap) was successfully synthesized in form of nanoscale powder with needle-like nanocrystalls by precipitation. The Hap powder was further used to reinforce hydrogels and prepare nanocomposites for potential scaffold applications. Dynamic mechanical analysis showed that it is feasible to improve the Hydrogel/Hap dynamic stiffness in compression as high as 400% by adding a mere 0.32 wt% Hap (or 0.5 wt% theoretically). On the other hand at the same weight fractions of Hap some improvement was experienced also for the 0.32 wt% Hap specimens. Hap weight fractions higher than 0.5 wt% lead to property deterioration.