Statistical and Thermodynamic Properties of Star-branched Polymers Made by Af+AB Type Polycondensation

doi:10.7503/cjcu20130377

Abstract

Abstract:

The thermodynamic properties of the star-branched polymers made by A_f+AB type polycondensa-tion were investigated by the principle of statistical mechanics. Starting with the canonical partition functions constructed from two viewpoints, the equilibrium free energy, the law of mass action and the size distribution of polymers were obtained. Furthermore, the specific heat and equation of state due to polymerization were given. In order to study the dimension of polymers in the system, the influences of the solvent quality on the average dimension of the star-branched polymers were discussed. The results showed the relationship between the average properties and thermodynamic and dynamic conditions, and thereby provided helpful clues on regulating relevant properties of the star-branched polymers.

Key words: Star-branched polymerization, Law of mass action, Mean square radius of gyration, Solvent effect

CLC Number:

O641
O631

TrendMD:

TIAN Yue-Lan, BA Xin-Wu. Statistical and Thermodynamic Properties of Star-branched Polymers Made by A_f+AB Type Polycondensation[J]. Chem. J. Chinese Universities, 2013, 34(9): 2158.

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Statistical and Thermodynamic Properties of Star-branched Polymers Made by A_f+AB Type Polycondensation

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