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首页> 外文期刊>Materials science & engineering >The fabrication of nanocomposites via calcium phosphate formation on gelatin-chitosan network and the gelatin influence on the properties of biphasic composites
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The fabrication of nanocomposites via calcium phosphate formation on gelatin-chitosan network and the gelatin influence on the properties of biphasic composites

机译：明胶-壳聚糖网络上通过磷酸钙形成的纳米复合材料的制备和明胶对双相复合材料性能的影响

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摘要

A novel biodegradable polymer-ceramic nanocomposite which consisted of gelatin (Gel), chitosan (CS), and calcium phosphate (CaP) nanoparticles was prepared based on in situ preparation method. The fabricated biocomposites were characterized by FTIR, X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as scanning electron microscope with X-ray elemental analysis (SEM-EDX). The characterization results confirmed that the crystalline calcium phosphate nanoparticles were mineralized in polymeric matrix and the interaction between Ca2 + in calcium phosphate and functional groups in polymers molecular chains was formed. XRD result showed that in addition to hydroxyapatite (HA), Brushite (BR) and tricalcium phosphate (β-TCP) particles also were formed due to lack of complete penetration of the basic solution into the polymeric matrix. However, SEM image indicated that the polymeric matrix has the controlling role in the particle size of calcium phosphate. The size of particles in three component composites was about 100 nm while in two component composites proved to be more in μm size. TEM observation supported SEM results and showed that the three component composites have calcium phosphate nanoparticles. The elastic modulus and compressive strength of the composites were also improved by the employment of gelatin and chitosan together, which can make them more beneficial for surgical applications.
机译：基于原位制备方法，制备了由明胶（Gel），壳聚糖（CS）和磷酸钙（CaP）组成的新型可生物降解的高分子陶瓷纳米复合材料。通过FTIR，X射线衍射（XRD），透射电子显微镜（TEM）以及具有X射线元素分析的扫描电子显微镜（SEM-EDX）对制备的生物复合材料进行了表征。表征结果证实结晶的磷酸钙纳米颗粒在聚合物基质中矿化，并且形成了磷酸钙中的Ca 2+与聚合物分子链中的官能团之间的相互作用。 XRD结果表明，由于碱性溶液没有完全渗透到聚合物基质中，所以除了羟基磷灰石（HA）之外，还形成了透钙磷石（BR）和磷酸三钙（β-TCP）颗粒。然而，SEM图像表明聚合物基质对磷酸钙的粒径具有控制作用。三个组分复合材料中的颗粒尺寸约为100 nm，而两个组分复合材料中的颗粒尺寸被证明更大。 TEM观察结果支持SEM结果，并显示这三组分复合材料具有磷酸钙纳米颗粒。通过一起使用明胶和壳聚糖，还可以提高复合材料的弹性模量和抗压强度，这可以使它们更有利于外科应用。

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  • 来源
    《Materials science & engineering》 |2013年第1期|370-375|共6页
  • 作者

    Zahra Babaei; Mohsen Jahanshahi; Sayed Mahmood Rabiee;

  • 作者单位

    Nanotechnology Research Institute, School of Chemical Engineering, Babol University of Technology, Babol, Iran;

    Nanotechnology Research Institute, School of Chemical Engineering, Babol University of Technology, Babol, Iran,Babol University of Technology, Babol, P.O.BOX: 484, Iran;

    Nanotechnology Research Institute, School of Chemical Engineering, Babol University of Technology, Babol, Iran,School of Mechanical Engineering, Babol University of Technology, Babol, Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanocomposites; calcium phosphate; chitosan; polymetric matrix; gelatin;

    机译：纳米复合材料磷酸钙;壳聚糖多重矩阵明胶;

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