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Role of silk fibroin and rice starch on some physical properties of hydroxyapatite-based composites

机译：丝素蛋白和大米淀粉对羟基磷灰石基复合材料某些物理性能的作用

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摘要

The role of organic blends of silk fibroin (SF) and rice starch (RS) in bone composites based on inorganic hydroxyapatite (HA) is studied. The physical property of HA-based composites prepared by using the sol-gel method from Ca(OH)(2) and H3PO4 in ethanol and water solvent (4 : 1 volume ratio) could be improved by adding SF and RS (1 : 2 weight ratio) to HA (7 : 3 weight ratio). The Fourier transform infrared spectrometer spectrum shows that the SF and RS organic phases are blended homogeneously into the HA crystal structure. Addition of SF increases the pore size and surface area of the composites, as measured by Brunauer-Emmett-Teller method, but their pore volume is slightly decreased. The values of lattice parameters, crystallinity, and crystallite size, as determined from the field-emission scanning electron microscope, transmission electron microscope, and X-ray diffractometer results, increase after adding RS. The results are agreeable with the increase of their compressive strength and Young's modulus. Thus, the improved physical property of the prepared HA-SF/RS composites is better suited as bone-filling material than the standard HA or HA-based composites with either SF or RS only. Therefore, due to its low cost, biocompatibility, and nontoxicity, this innovative solution could be worth taken under consideration by the restorative dental and orthopedic implants industry. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42722.
机译：研究了丝素蛋白（SF）和大米淀粉（RS）的有机共混物在基于无机羟基磷灰石（HA）的骨复合材料中的作用。通过溶胶-凝胶法由Ca（OH）（2）和H3PO4在乙醇和水溶剂（体积比为4：1）中制备的HA基复合材料的物理性能可以通过添加SF和RS（1：2）来改善重量比）至HA（7：3重量比）。傅立叶变换红外光谱仪的光谱表明，SF和RS有机相均匀地混入了HA晶体结构中。如通过Brunauer-Emmett-Teller方法所测量的，SF的添加增加了复合材料的孔径和表面积，但是其孔体积略微减小。添加了RS后，由场发射扫描电子显微镜，透射电子显微镜和X射线衍射仪确定的晶格参数，结晶度和微晶尺寸值增加。结果与它们的抗压强度和杨氏模量的增加是一致的。因此，与仅具有SF或RS的标准HA或基于HA的复合材料相比，所制备的HA-SF / RS复合材料的改善的物理性质更适合用作骨填充材料。因此，由于其低成本，生物相容性和无毒性，这种创新的解决方案可能值得修复性牙科和整形外科植入物行业考虑。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42722。

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