Inverse gas chromatography (IGC) has been applied to observe the interaction between poly(vinylidene fluoride) (PVDF) and organic solvent systems under conditions approaching infinite dilution of the volatile component. The specific retention volumes (V-g(0)) were calculated from the retention volumes of the PVDF/solvent systems. The retention diagrams (RDs! which were plotted as InVg0, vs, reciprocal temperature, corresponded with the thermodynamic behavior of PVDF. PVDF dissolves well in carbonyl-containing solvents at high temperatures. Tn these systems, the solution is converted easily to a thermoreversible gel by standing at room temperature. The Flory-Huggins interaction parameter (chi 12) and molar heat of sorption of probe absorbed by the amorphous part of PVDF (Delta HIs) calculated from the retention values indicated that the characteristics of the interaction between PVDF and the solvent (probe) Varied with temperature and probe properties. The results of IGC of PVDF/solvent systems were discussed in relation to the dissolution and gelation behavior of PVDF.