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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (21): 2500-2504. 上一篇    下一篇

研究论文

类牙釉状丝胶蛋白/羟基磷灰石复合材料的合成及表征

金君   梅丹平   夏年鑫    王秀华   蔡玉荣   姚菊明   

  1. (浙江理工大学材料与纺织学院 教育部先进纺织材料与制备技术重点实验室 杭州 310018)
  • 投稿日期:2009-02-22 修回日期:2009-05-10 发布日期:2009-06-30
  • 通讯作者: 姚菊明 E-mail:yaoj@zstu.edu.cn
  • 基金资助:

    长江学者和创新团队发展计划（No. IRT0654），新世纪优秀人才支持计划（No. NCET070763），973计划前期研究专项课题（No. 2008CB617506）和钱江人才计划（No. 2008R10006）

Synthesis and Charcterization of Silk Sericin/Hydroxyapatite Composite with Enamel-like Microstructure

Jin, Jun       Mei, Danping       Xia, Nianxin       Wang, Xiuhua       Cai, Yurong       Yao, Juming*   

  1. (Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou 310018)
  • Received:2009-02-22 Revised:2009-05-10 Published:2009-06-30
  • Contact: JuMing Yao E-mail:yaoj@zstu.edu.cn

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被引次数

1

采用化学沉淀法合成了丝胶蛋白(SS)/羟基磷灰石(HAP)复合材料, 并研究了矿化时间对复合材料的影响. X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、透射电镜(TEM/HRTEM)和扫描电镜(SEM)表征结果表明: 在较短的矿化时间内, 合成的SS/HAP为直径约20 nm的复合颗粒; 随着矿化时间的延长, 这些复合颗粒能够沿轴方向组装并融合成类牙釉结构的较大晶体. 文章讨论了其可能的组装机制.

关键词: 羟基磷灰石, 丝胶蛋白, 分子组装, 类牙釉

The silk sericin (SS)/hydroxyapatite (HAP) composite was synthesized via a chemical co-precipitation method. The effect of mineralization time on the formation of composite, including growth of crystal, aggregation and assembly of nanoparticles, was investigated using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM). The results revealed that the mineralization time could influence the size, morphology and assembly of SS/HAP composite, i.e., long mineralization time leading to the large composite particles with high hydroxyapatite crystallinity. A more interesting thing was that the rod-like composite particles with 300～500 nm in length and 50～80 nm in diameter were assembled along the c-axis by the small nanoparticles with a size of about 20 nm, which is very similar to the assembly of natural enamel. The formation mechanism of enamel-like microstructure of SS/HAP composite was proposed.

Key words: hydroxyapatite, silk sericin, molecular assembly, enamel-like