Zhou Shiqi, Zhang Xiaoqi, Xiang Xianwei, Xiang Hong. Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 38-44. doi: 10.1088/1674-0068/17/1/38-44
Citation: Zhou Shiqi, Zhang Xiaoqi, Xiang Xianwei, Xiang Hong. Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 38-44. doi: 10.1088/1674-0068/17/1/38-44

Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles

doi: 10.1088/1674-0068/17/1/38-44
Funds:  Project supported by the National Natural Science Foundation of China(20206033),the Natural Science Foundation of Hunan provincial(01JJY3005).
  • Received Date: 2002-12-16
  • Binary components Ornstein-Zernike integral equation with the concentration of large particle component being set to zero was employed to study the depletion potential behavior between two large neutral colloid particles (modeled as hard spheres)immersed in a sea of small neutral solvent particles. The prediction for the depletion potential behavior compared well with simulation data and experimental data available in the literature. It is found that the Hansen-Verlet one phase criterion,based on the effective one component system with the present depletion potential,for the freezing transition is completely not suitable for the real binary components system. It is disclosed that the unsuitability is due to the volume term of the solid phase and liquid phase which can not be treated selfconsistently in the Hansen-Verlet one phase criterion.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles

doi: 10.1088/1674-0068/17/1/38-44
Funds:  Project supported by the National Natural Science Foundation of China(20206033),the Natural Science Foundation of Hunan provincial(01JJY3005).

Abstract: Binary components Ornstein-Zernike integral equation with the concentration of large particle component being set to zero was employed to study the depletion potential behavior between two large neutral colloid particles (modeled as hard spheres)immersed in a sea of small neutral solvent particles. The prediction for the depletion potential behavior compared well with simulation data and experimental data available in the literature. It is found that the Hansen-Verlet one phase criterion,based on the effective one component system with the present depletion potential,for the freezing transition is completely not suitable for the real binary components system. It is disclosed that the unsuitability is due to the volume term of the solid phase and liquid phase which can not be treated selfconsistently in the Hansen-Verlet one phase criterion.

Zhou Shiqi, Zhang Xiaoqi, Xiang Xianwei, Xiang Hong. Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 38-44. doi: 10.1088/1674-0068/17/1/38-44
Citation: Zhou Shiqi, Zhang Xiaoqi, Xiang Xianwei, Xiang Hong. Integral Equation Method for the Determination of the Depletion Potential Between Two Colloidal Particles[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 38-44. doi: 10.1088/1674-0068/17/1/38-44

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