期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 94, 期 1-3, 页码 330-338出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2006.04.006
关键词
biomimetic material; bone; calcium phosphate; nanocomposite; nanoparticle
The synthesis of mesostructured calcium phosphate micron-sized rods and nanoparticles using mono-n-dodecyl phosphate ((C12H25O)P(O)(OH)(2), MDP) and cetyltrimethylammonium bromide (C19H42BrN, CTAB), is described. The effect of concentration, molar ratio, and ethanol as co-solvent on the shape, size, and porous structure of the resulting materials is discussed. MDP was used as a surfactant to pattern the rods with pores generated by the formation of a lamellar calcium MDP phase. CTAB, as a co-surfactant could be used to form micron-sized rods of varying length based on its molar ratio with the other reactants. Ethanol affected surfactant self-assembly, and could be used to change particle morphology from sphere-like to fiber. Certain synthesis conditions yielded low surface area spherical brushite nanoparticles grown from 46 nm MDP vesicles, while others resulted in micron-sized rods with surface areas of go m(2)/g and a porosity of 30% comprised primarily of octacalcium phosphate. (c) 2006 Elsevier Inc. All rights reserved.
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