Effective Interaction Potentials Between Regular Star Polymers by  Self-consistent Field Theory

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (1): 174.

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Effective Interaction Potentials Between Regular Star Polymers by Self-consistent Field Theory

XU Jia-Jing, QIU Feng, ZHANG Hong-Dong, YANG Yu-Liang

Department of Macromolecular Science, Key Lab of Molecular Engineering of Polymers, Ministry of Education, Fudan University, Shanghai 200433, China

Received:2005-01-10 Online:2006-01-10 Published:2006-01-10
Contact: QIU Feng,E-mail: fengqiu@fudan.edu.cn

Abstract

Abstract:

The effective pair potential and triplet potential of regular star polymers in athermal solvent were calculated by using self-consistent field theory(SCFT), and were compared to the results of scaling arguments and other particle based simulations. The pair potential is a function of the distance between cores of the two star polymers and their functionality, which has the scaling form: U(d)∝-f3/2ln(d/R). The triplet potential is attractive when the closest distance among the cores of the three star polymers is less than the effective dimension of the star polymers and its magnitude is only 10% of the pair potential. Therefore, the pair potential contributes largely to the total interaction potential, which validates the particle based on the simulations where only the pair potential was considered.

Key words: Self-consistent field theory(SCFT); Regular star polymers; Interaction potential; Pair interaction; Triplet interaction

CLC Number:

O631

TrendMD:

XU Jia-Jing, QIU Feng, ZHANG Hong-Dong, YANG Yu-Liang. Effective Interaction Potentials Between Regular Star Polymers by Self-consistent Field Theory[J]. Chem. J. Chinese Universities, 2006, 27(1): 174.

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Effective Interaction Potentials Between Regular Star Polymers by Self-consistent Field Theory

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