Bioactive composites produced in situ on the basis of calcium phosphates and lactic acid oligomers

被引：7
|
作者：
Rasskazova, L. A. [1 ]
Lytkina, D. N. [1 ]
Shapovalova, Ye. G. [1 ]
Botvin, V. V. [1 ]
Pozdnyakov, M. A. [1 ]
Filimoshkin, A. G. [1 ]
Korotchenko, N. M. [1 ]
Kozik, V. V. [1 ]
机构：
[1] Natl Res Tomsk State Univ, Tomsk 634050, Russia
来源：
RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2015年 / 88卷 / 04期
关键词：
HYDROXYAPATITE; SURFACE;
D O I：
10.1134/S1070427215040205
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Composites based on lactic acid oligomers, calcium hydrophosphate and hydroxyapatite synthesized under the action of microwave radiation were obtained in situ. The appearance of a new band associated with stretching vibrations of > C=O in spectra of the chloroform-insoluble fraction is indicative of the chemical interaction between lactic acid and hydroxyapatite. To determine whether a calcium phosphate layer can be formed on the surface of composite samples, biomimetic studies in a physiological SBF solution were carried out during 28 days at 37A degrees C. It was found that all samples containing calcium phosphates promote active formation of a new calcium phosphate layer, whereas lactic acid oligomer in samples containing no inorganic component undergoes destruction in the SBF solution as a result of hydrolysis. The estimate of the resorption rate demonstrated that the solubility of calcium phosphates contained in the composites at 20A degrees C in the physiological solution is 3-7 times that of pure hydroxyapatite.
引用
收藏
页码：669 / 675
页数：7
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