中国塑料 ›› 2018, Vol. 32 ›› Issue (10): 58-64.DOI: 10.19491/j.issn.1001-9278.2018.10.009

• 材料与性能 • 上一篇    下一篇

CSH增强PPC骨修复材料的制备及性能表征

李玥,张恒飞,孟静静,常玉雪,周宏艳   

  1.  河南工程学院材料与化学工程学院
  • 收稿日期:2018-04-28 修回日期:2018-09-09 出版日期:2018-10-26 发布日期:2018-10-26
  • 基金资助:
    国家自然科学基金青年基金(51608175); 河南省教育厅科学技术研究重点项目(17B610004); 河南工程学院博士基金项目(D2015020)

Preparation and Performance of CSH-reinforced PPC Composites for Bone Repair

  • Received:2018-04-28 Revised:2018-09-09 Online:2018-10-26 Published:2018-10-26

摘要: 为了实现对聚碳酸亚丙酯(PPC)的增强和半水硫酸钙(CSH)的缓慢降解,通过共混的方法制备了PPC/CSH复合材料,并使用扫描电子显微镜、热重分析、力学测试、X射线衍射等测试方法对CSH和PPC/CSH复合材料进行表征。结果表明,通过高压水热盐溶液法制备的CSH为半水硫酸钙,且CSH呈纤维状结构,具有较大的长径比,适用于高分子的增强;CSH显著提高了PPC复合材料的拉伸强度和弯曲强度,但是复合材料的断裂伸长率则随着CSH的增加而逐渐下降;CSH加入到PPC基体中之后未改变其结晶结构,保持了其生物活性;少量的CSH能够均匀地分散在PPC基体中,具有良好的界面相容性,CSH用量较多时则出现了少量的团聚体;PPC与CSH复合之后,CSH的降解速率明显下降,达到了对CSH降解速率控制的效果。

Abstract: To enhance the performance of PPC and reduce the degradation speed of calcium sulphate hydrate (CSH), the PPC/CSH composites were prepared by a meltblending method, andtheir mechanical properties and degradability were investigated.The results indicated that the CSH prepared by a highpressure hydrothermal salt solution method was a semihydrate of calcium sulfate with a fibrous structure and large ratio of length to diameter, which made it suitable for the enhancement of polymer.The mechanical test results indicated that the introduction of CSH could improve the tensile strength and bending strength of PPC composites significantly, and however the elongation at break of the composites decreased gradually with an increase of CSH content.After added into PPC, the CSH still kept a good biological activity without any change in its crystalline structure.Morphological investigation indicated that the CSH was well dispersed in the matrix at a low content due to good compatibility, but an aggregation occurred at a high loading of CSH.The degradation rate of CSH was found to decrease significantly after blending with PPC, and its degradation rate could be well controlled. Moreover, the mechanical properties of PPC/CSH composites were improved.These results confirmed a good potential for the bonerepairing application of PPC/CSH composites.