| La_2O_3超微粒在PMAA-Na中的吸附特性研究 |
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| 引用本文： | 谢慈仪,李声泽,李健. La_2O_3超微粒在PMAA-Na中的吸附特性研究[J]. 西南师范大学学报(自然科学版), 1992, 0(4) |
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| 作者姓名： | 谢慈仪 李声泽 李健 |
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| 作者单位： | 西南师范大学高新科技研究所 重庆630715(谢慈仪，李声泽)，西南师范大学高新科技研究所 重庆630715(李健) |
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| 摘 要： | 用毛细管粘度法测量了不同浓度和pH值时吸附在超微粒La_2O_3表面的PMAA-Na膜厚度.用界面移动法测量了超微粒La_2O_3/PMAA-Na吸附物颗粒的电泳淌度.由此求出不同浓度和pH值时胶态分散体系Zeta电势值.采用Fischer等人发展起来的渗透压排斥理论模型,通过对吸附物颗粒间渗透排斥能△Ga的定量计算,较为满意地解释了超微粒La_2O_3/PMAA-Na吸附物颗粒所形成的胶态分散体系的稳定性能.
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| 关 键 词： | 超微粒氧化镧 甲基丙烯酸 吸附动力学 Zeta电势 渗透排斥能 稳定性 |
THE ADSORPTION BEHAVIOR OF ULTRAFINE La2O3 IN PMAA-Na |
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| Xie Ciyi Li Shengze Li Jian. THE ADSORPTION BEHAVIOR OF ULTRAFINE La2O3 IN PMAA-Na[J]. Journal of southwest china normal university(natural science edition), 1992, 0(4) |
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| Authors: | Xie Ciyi Li Shengze Li Jian |
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| Affiliation: | Highly-Advanced Scfence-Tedmology Institute. Southwest Teaeheis University. Chongqing 630715 |
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| Abstract: | Capillary viscometry measurements were made of the thickness of the adsorbed layer of PMAA-Na on the surface of ultrafine particles LazO3 in different systems with various pH and concentration. The zeta potential in the system was measured and calculated by means of interfacial migration. The stability of the La2O3/PMAA-Na colloidal disperse system has been satisfactorily explained by calculating the energy of osmotic repulsion ( AB, ) between the adsorbed particles acording to Fischers model of that. |
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| Keywords: | Ultrafines of lanthanum oxide methacrytic acid adsorption kinetics zeta potential energy of osmotic pressure and repulsive potential stability |
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