J4

• 化学 • 上一篇    下一篇

疏水性纳米碳酸钙的原位合成

王成毓, 王子忱, 赵旭, 刘莹, 赵敬哲, 盛韧   

  1. 吉林大学 化学学院, 长春 130021
  • 收稿日期:2006-08-30 修回日期:1900-01-01 出版日期:2007-05-26 发布日期:2007-05-26
  • 通讯作者: 王成毓

Synthesis of Hydrophobic Calcium Carbonate Nanoparticles in Situ

WANG Chengyu, WANG Zichen, ZHAO Xu, LIU Ying, ZHAO Jingzhe, SHENG Ren   

  1. College of Chemistry, Jilin University, Changchun 130021, China
  • Received:2006-08-30 Revised:1900-01-01 Online:2007-05-26 Published:2007-05-26
  • Contact: WANG Chengyu

摘要: 在甲醇溶液中通过自制表面活性剂的控制, 成功制备出疏水性纳米碳酸钙. 采用扫描电镜、 透射电镜、 X射线衍射、 红外光谱、 热重分析和接触角测试对产品进行测定. 结果表明, 表面活性剂在反应过程中不但控制晶体的成核生长, 同时还能对碳酸钙表面 进行修饰. 通过控制反应条件, 得到了粒径为40 nm的椭球型纳米碳酸钙粉体, 产品晶型为文石和方解石型, 表面活性剂与碳酸钙形成化学键合,制备的粉体产品为疏水性, 成功地对碳酸钙进行了原位表面修饰.

关键词: 碳酸钙, 生物矿化, 纳米粒子, 表面活性剂, 原位

Abstract: Hydrophobic calcium carbonate nanoparticles were prepared via crystallization of calcium carbonate with a surfactant in methanol. The product was characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA) and the contact angle analysis. In the experiments, the surfactant could not only control the crystal shape but also modify the surface of calcium carbonate. The ellipselike nanoCaCO 3 particles with an average diameter of 40 nm have been obtained under given experim ental conditions. The crystal polymorph of the final particles was aragonite and calcite. From FTIR spectra, we could conclude that the surfactant has been bound to calcium carbonate. The contact angle analysis indicates that the final calcium carbonate is hydrophobic. We have succeeded in surface modification of calcium carbonate in situ.

Key words: calcium carbonate, biomineralization, nanoparticle, surfactant, in situ

中图分类号: 

  • O614