Effect of metal clusters on the swelling of gold-fluorocarbon-polymer   composite films
  We have investigated the phenomenon of swelling due to acetone diffusion in fluorocarbon polymer films doped with different gold concentrations below the percolation threshold. The presence of the gold clusters in the polymer is shown to improve the mixing between the fluorocarbon polymer and the acetone, which is not a good solvent for this kind of polymers. In order to explain the experimental results the stoichiometry and the morphology of the polymer--metal system have been studied and a modified version of the Flory--Huggins model has been developed. 
A. Convertino, A. Valentini, A. Bassi, N. Cioffi, L. Torsi, and E. N.   M. Cirillo
cond-mat.mtrl-sci