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1982•Journal of Polymer Science Polymer Chemistry EditionRequires access

The reduced equation of state and related properties of molten high polymers

Han Gook Cho, Sung Chul Yoon, Mu Shik Jhon

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Abstract

Abstract The significant‐structure theory of liquids has been applied to molten amorphous polymers. Expressions of reduced states for these systems are derived for the equation of state and thermodynamic properties such as expansion coefficient, compressibility, internal pressure, and cohesive energy density, and the surface tension. The calculated values are in good agreement with experimental results in comparison with those from other models. In particular, our model predicts the corresponding dependence of the internal pressure better than other models.

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What this paper is about

Abstract The significant‐structure theory of liquids has been applied to molten amorphous polymers. Expressions of reduced states for these systems are derived for the equation of state and thermodynamic properties such as expansion coefficient, compressibility, internal pressure, and cohesive energy density, and the surface tension. The calculated values are in good agreement with experimental results in comparison with those from other models. In particular, our model predicts the corresponding dependence of the internal pressure better than other models.

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Available abstract

Abstract The significant‐structure theory of liquids has been applied to molten amorphous polymers. Expressions of reduced states for these systems are derived for the equation of state and thermodynamic properties such as expansion coefficient, compressibility, internal pressure, and cohesive energy density, and the surface tension. The calculated values are in good agreement with experimental results in comparison with those from other models. In particular, our model predicts the corresponding dependence of the internal pressure better than other models.

Key concepts: Compressibility, Thermodynamics, Equation of state, Surface tension, Internal pressure, Polymer, Internal energy, Amorphous solid

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