Theories of Homopolymer Surface Tension

Following the initial approach of Gibbs, the surface tension can be obtained from the equations of state  

Over small temperature ranges the surface tension varies almost linearly with temperature consistent with the typical linear dependence of density on temperature. The temperature coefficient of surface tension for polymers falls in the range 0.05-0.07 mN m .  

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Theories of Homopolymer Surface Tension. More rigorous expressions for predicting polymer surface tension have been derived from equations of state for polymers. Corresponding states principles have been employed to derive expressions for surface tensions in terms of characteristic equation of state parameters and the associated reduced temperature, pressure, and volume. One proposed expression is of the form (14)... 

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