高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

BaTiO3颗粒对分散剂PMAA-NH4的吸附机制研究

赵九蓬1; 强亮生1; 李垚2; 韩杰才2   

  1. 1. 哈尔滨工业大学应用化学系; 2. 哈尔滨工业大学复合材料研究所; 哈尔滨 150001
  • 收稿日期:2001-07-18 修回日期:2001-08-13 出版日期:2002-07-20 网络出版日期:2002-07-20

Adsorption Mechanism of Dispersant PMAA-NH4 on BaTiO3

ZHAO Jiu-Peng1; LI Yao2; QIANG Liang-Sheng1; HAN Jie-Cai2   

  1. 1. Department of Applied Chemistry; Harbin 150001; China; 2. Harbin Institute of Technology; Harbin 150001, China
  • Received:2001-07-18 Revised:2001-08-13 Published:2002-07-20 Online:2002-07-20

PDF (PC)

1246

摘要： 通过（电位测量及FTIR分析,研究了BaTiO3颗粒对阴离子型分散剂PMAA-NH4的吸附机制.结果表明,加入PMAA-NH4后,由于BaTiO3颗粒表面上存在Ba-OH2+的正电荷中心,从而吸附了分散剂的阴离子,使BaTiO3表面带电特性改变,等电点由pH-5.1移至pH=3.5.当pH=10,PMAA-NH4的加入量为0.8wt％时,BaTiO3颗粒表面吸附达到饱和,可以得到稳定性好的BaTiO3悬浮体.

关键词: 分散剂, BaTiO3悬浮体, 吸附

Abstract: Adsorption mechanism of dispersant PMAA-NH4 on BaTiO3 was studied by using potential and FTIR spectrum. The results show that the positive charge, Ba-OH2+, existing on the surface of BaTiO3 adsorbs the negative ion of the dispersant. The surface charge of BaTiO3 and its IEP from pH=5.1 to pH=3.5 change after the addition of PMAA-NH4. When pH=10, the concentration of PMAA-NH4 is 0.8wt%, the adsorption comes up to saturation and stabilized BaTiO3 suspension can be obtained.

Key words: dispersant, BaTiO3 suspension, adsorption

中图分类号: