高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (11): 2478.

• 研究论文 • 上一篇    下一篇

二次碳化法制备疏水链状纳米碳酸钙

关爽, 安冬敏,  郑云辉,  高小燕,  麻越佳,  王子忱   

  1. 吉林大学化学学院, 长春 130012
  • 收稿日期:2011-03-08 修回日期:2011-03-25 出版日期:2011-11-10 发布日期:2011-10-14
  • 通讯作者: 王子忱 E-mail:wangzc@jlu.edu.cn

Preparation of Chain-like  CaCO3 Nanoparticles with Hydrophobic Properties via Double  Carbonation Route

GUAN Shuang, AN Dong-Min, ZHENG Yun-Hui, GAO Xiao-Yan, MA Yue-Jia, WANG Zi-Chen*   

  1. College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2011-03-08 Revised:2011-03-25 Online:2011-11-10 Published:2011-10-14
  • Contact: WANG Zi-Chen E-mail:wangzc@jlu.edu.cn

摘要: 以柠檬酸和十六酸的氨溶液为表面控制剂,  用二次碳化法制备了疏水链状纳米碳酸钙晶体. 用透射电子显微镜、X射线衍射、红外光谱、热重分析和接触角测试对产品进行了分析. 结果表明, 表面控制剂在反应过程中不但可以控制晶体的成核生长,  还能对碳酸钙表面进行修饰. 在不添加表面控制剂的溶液中得到立方体状表面亲水的纳米碳酸钙晶体;   添加柠檬酸和十六酸的氨溶液后所得纳米碳酸钙晶体为链状表面疏水. 将碳酸钙添加到聚乙烯中, 聚乙烯的初始热分解温度提高, 热力学稳定性增加.

关键词: 纳米碳酸钙, 链状碳酸钙, 疏水, 柠檬酸, 十六酸

Abstract: Double carbonation route for the synthesis of hydrophobic chain-like nanometer calcium carbonate was studied. In the process, citric acid and cetyl acid were used as an organic substrate to induce the nucleation and modify the surface of calcium carbonate separately. The operating parameters such as temperature and the concentration of the organic substrate were varied to study their influences on the active ratio and contact angle of calcium carbonate particles. The products were characterized by transmission electron microscope(TEM), X-ray powder diffraction(XRD), Fourier transform infra-red(FTIR) and thermo gravimetric analysis(TGA).The results show that hydrophobic chain-like nanometer CaCO3 crystals can be obtained in the presence of citric acid and cetyl acid. Whereas, only cubic CaCO3 crystals can be obtained without citric acid and cetyl acid.

Key words: Nanometer calcium carbonate, Chain-like calcium carbonate, Hydrophobicity, Citric acid, Cetyl acid

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