高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (12): 2598.doi: 10.7503/cjcu20150417

• 高分子化学 • 上一篇    下一篇

石墨烯/聚吡咯的添加对磷酸钙骨水泥结构与性能的影响

肖镇昆, 于浩然, 吴涛, 王瑞贞, 彭章, 卢晓英(), 翁杰   

  1. 材料先进技术教育部重点实验室, 西南交通大学材料科学与工程学院, 成都 610031
  • 收稿日期:2015-05-22 出版日期:2015-12-10 发布日期:2015-11-17
  • 作者简介:联系人简介: 卢晓英, 女, 博士, 副教授, 主要从事生物材料研究. E-mail:luxy2005@swjtu.com
  • 基金资助:
    国家“九七三”计划项目(批准号: 2012CB933602)、 国家自然科学基金(批准号: 51172188)和西南交通大学重点实验室开放项目(批准号: ZD20145014)资助

Effects of Adding Reduced-graphene Oxide/Polypyrrole Composites on the Structure and Properties of Calcium Phosphate Cement

XIAO Zhenkun, YU Haoran, WU Tao, WANG Ruizhen, PENG Zhang, LU Xiaoying*(), WENG Jie   

  1. Key Lab of Advanced Materials Technology of Ministry of Education, School of Material Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2015-05-22 Online:2015-12-10 Published:2015-11-17
  • Contact: LU Xiaoying E-mail:luxy2005@swjtu.com
  • Supported by:
    † Supported by the National Basic Research Program of China(No.2012CB933602), the National Natural Science Foundation of China(No.51172188) and the Open Project of Key Laboratory, Southwest Jiaotong University, China(No.ZD20145014)

摘要:

自然骨具有压电效应, 结合电刺激可以促进骨组织生长与修复, 因此制备具有导电性人工骨材料尤为重要. 本文通过在骨水泥(CPC)固相中添加不同含量的高导电率的还原氧化石墨烯(RGO)/聚吡咯(PPy)复合材料, 研究不同含量RGO/PPy的添加对CPC结构与性能的影响. 结果表明, 添加RGO/PPy复合材料的CPC, 其初凝时间和终凝时间都有所减小, 但凝固时间均能满足临床使用要求. RGO/PPy的添加对CPC的物相组成没有影响, 但对其抗压力学性能、 微观形貌、 导电性能的影响较大. 其中, CPC的抗压力学性能随着RGO/PPy添加量的增加而减小, 导电性随着RGO/PPy的添加量的增加而增大.

关键词: 聚吡咯, 石墨烯, 磷酸钙骨水泥, 电导率, 力学性能

Abstract:

With the piezoelectricity of natural bone, electrical stimulation has been widely used in clinic for promoting bone growth and reconstruction. It has special meaning to prepare a conductive biomaterial for bone repair. In this paper, reduced-graphene oxide(RGO)/polypyrrole(PPy) composites with high conducity were added in the solid phase of calcium phosphate cement(CPC) and the effect of this addition on the structure and properties was investigated. The composites had great impact on physicochemical properties of CPC. The results showed that the setting time of CPC significantly decreases with RGO/PPy adding. It has great influence of adding RGO/PPy on the mechanical properties and conductivity of CPC, but no obvious effect on the phase composition of CPC. The conductivity of CPC gradually increases with the increase of RGO/PPy adding amount, and the compressive properties show opposite results with RGO/PPy addition. It has a dependent relationship between the adding amount of RGO/PPy and the conductivity and compressive mechanical properties.

Key words: Polypyrrole, Reduced-graphene oxide, Calcium phosphate cement, Conductivity, Mechanical property

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