Gravimetric Sorption GS

This method tends to be very slow because substantial amounts of polymer are generally used. Due to the low diffusivities of most solvents in the solid polymer, the solvent 

The method can be used for weight fractions of solvent up to 0.75, but the data become very unreliable in this range and small temperature fluctuations cause large swings in the data. A more reasonable upper limit is 0.5 weight fraction solvent. 

---