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>Effects of thermodynamic models on the predictions of free volume diffusion theory for concentrated polymer solutions
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Effects of thermodynamic models on the predictions of free volume diffusion theory for concentrated polymer solutions
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机译：Effects of thermodynamic models on the predictions of free volume diffusion theory for concentrated polymer solutions
AbstractThree thermodynamic models were used to demonstrate the effects of model choice on solvent–polymer binary diffusion coefficients predicted by free volume theory. Poly(vinyl acetate) and four solvents were used as typical solutions for these calculations. Thermodynamic models affect the predictions the most at high solvent weight fractions and for solutions which exhibit positive enthalpic interactions. For solutions dilute in solvent where Henry's law might describe phase equilibria, diffusion coefficients can be estimated without reference to thermodynamic dat
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