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entropy of mixing
(redirected from Gibbs free energy of mixing)

   Also found in: Wikipedia 0.01 sec.
entropy of mixing [′en·trə·pē əv ′mik·siŋ]
(physical chemistry)
After mixing substances, the difference between the entropy of the mixture and the sum of the entropies of the components of the mixture.


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The compatibility of two polymers is favored as the Gibbs free energy of mixing has a negative value, which can be exhibited from the solubility parameters of two polymers.
The classical representation of the Gibbs free energy of mixing for the three-component system of PS, SM, and EVA is as follows: [DELTA][G.
It must be noted that the noncombinatorial entropy contribution that has not been taken into account in Eq 1 can also affect the Gibbs free energy of mixing (9), but for polymer mixtures it has been demonstrated that the heat of mixing contribution often dominates the other contributions (10, 11).
 
 
 
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