Premium
Effects of thermodynamic models on the predictions of free volume diffusion theory for concentrated polymer solutions
Author(s) -
Mossner Linda S.,
Grulke Eric A.
Publication year - 1988
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1988.070350408
Subject(s) - thermodynamics , diffusion , solvent , polymer , volume (thermodynamics) , vinyl acetate , chemistry , phase (matter) , binary number , solvent effects , polymer solution , materials science , organic chemistry , physics , mathematics , copolymer , arithmetic
Three 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 data.