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Microwave-assisted solution combustion synthesis of high aspect ratic calcium phosphate nanoparticles

机译：微波辅助固溶燃烧合成高比例大鼠磷酸钙纳米粒子

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摘要

Calcium phosphates (CaP_s) are major chemical constituents of mammalian bone. Their osteoconductivity in vitro and in vivo has encouraged their use in biomaterial applications such as implant materials and drug delivery. High aspect ratio nanoparticles are attractive for many biomedical applications; however, precise control of the phase and morphology is challenging. The impact of fuel-to-oxidant ratio, pH, and cation chemistry on morphology and phase was studied for CaP-based compositions by microwave-assisted solution combustion synthesis (MASCS) in a urea-nitrate (fuel-oxidant) system. An initial calcium to phosphate ratio of 1.5 was used. Highly crystalline hydroxyapatite (HA) and biphasic CaP nanoparticle compositions were produced as confirmed by x-ray diffraction, scanning electron microscopy, and transmission electron microscopy. MASCS was capable of synthesizing high aspect ratio (~5 to 20) single and biphasic CaP nanoparticles with diameters ranging from 250 to 500 nm and lengths between 2 and 10μm.
机译：磷酸钙（CaP_s）是哺乳动物骨骼的主要化学成分。它们在体外和体内的骨传导性促进了它们在生物材料应用中的应用，例如植入物材料和药物递送。高长径比的纳米粒子对许多生物医学应用具有吸引力。然而，精确控制相和形态具有挑战性。在硝酸尿素（燃料-氧化剂）系统中，通过微波辅助溶液燃烧合成（MASCS）研究了CaP基组合物的燃料与氧化剂的比例，pH和阳离子化学性质对形态和相的影响。最初的钙与磷酸盐之比为1.5。如通过X射线衍射，扫描电子显微镜和透射电子显微镜所证实的，产生了高度结晶的羟基磷灰石（HA）和双相CaP纳米颗粒组合物。 MASCS能够合成高纵横比（〜5至20）的单相和双相CaP纳米粒子，其直径范围为250至500 nm，长度为2至10μm。

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  • 来源
    《Journal of Materials Research》 |2013年第22期|3119-3129|共11页
  • 作者

    Darcy E. Wagner; Joseph Lawrence; Sarit B. Bhaduri;

  • 作者单位

    Department of Biomedical Engineering, Colleges of Engineering and Medicine, University of Toledo, Toledo,Ohio 43606 Department of Pulmonary and Critical Care, University of Vermont College of Medicine,Burlington, Vermont 05405;

    Department of Bioengineering, College of Engineering, University of Toledo, Toledo, Ohio 43606;

    Department of Mechanical, Industrial, and Manufacturing Engineering, College of Engineering,University of Toledo, Toledo, Ohio 43606 and Division of Dentistry, College of Medicine, University of Toledo,Toledo, Ohio 43614;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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