Interaction Energy and Force of Spherical Colloidal Particles at Moderate Potential

Abstract

Abstract: Using the definition of the effective reduced surface potential and resorting to improved Derjaguin method, we derive the formula for the interaction energy and force of identical and dissimilar spherical colloidal particles, valid up to the moderate potential. The agreement with exact numerical values is considerably improved on providing the surface potential ≤100 mV (for identical) and ≤75 mV (for dissimilar), the maximum relative errors are less than ±10%. For the identical and dissimilar spherical particles, our formula are best approximate expressions at present.

Key words: Repulsive energy, Repulsive force, Spheres

CLC Number:

O647.1

TrendMD:

GUO Ji-Zhi, LUO Gen-Xiang, WANG Hao-Ping, ZHAO Xiong-Hu. Interaction Energy and Force of Spherical Colloidal Particles at Moderate Potential[J]. Chem. J. Chinese Universities, 1998, 19(8): 1308.

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Interaction Energy and Force of Spherical Colloidal Particles at Moderate Potential

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