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Average Configuration of Finite Polymer with Excluded Volume Interaction
Author(s) -
Mou Chung Yuan
Publication year - 1984
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198400001
Subject(s) - chemistry , cyclohexane , gaussian , polymer , polydimethylsiloxane , thermodynamics , homogeneous , excluded volume , volume (thermodynamics) , polymer solution , statistical physics , distribution (mathematics) , finite volume method , interaction energy , computational chemistry , mathematical analysis , molecule , physics , organic chemistry , mathematics
A quasi‐thermodynamic model for expansion of polymer configuration in solution is investigated. The model is based on Gaussian distribution of segments and mean field theory of polymer solution. An in‐homogeneous contribution to the free energy of solution is proposed. It arises from the nonhomogeneous distribution of polymer segements. This effects makes the expansion factor α to be larger than those without the effect considered. Some numerical consequence for the case Polydimethylsiloxane+cyclohexane solution is calculated. Our theory predicts a larger value a than the case without inhomogeneous effect being considered. The difference becomes less significant at higher molecular weight.