Abstract
This study aims at determining the compatibilitybehavior of nanoparticles surface with fluorinated matrices toobtain a homogenous dispersion and better composites properties.First, modified silica nanoparticles by C6F13I and C6F13-C2H4-SH led to various fluorinated silica of different massicconcentrations and grafting rates. The dispersion of thesenanoparticles (in 5 wt %) into molten poly(VDF-co-HFP) andpoly(TFE-co-HFP) matrices were studied as well as the hydrophobic,mechanical, and thermal properties of both fluorinatedcopolymers and resulting composites. In both series, the storagemodulus of nanocomposites increased while the melting(Tm) and decomposition (T10%) temperatures varied with thepolymer matrix. They increased for poly(VDF-co-HFP) composites(Tm5 134 to 144 C and T10%5 441 to 464 C) butdecreased for poly(TFE-co-HFP) nanocomposites (Tm5 276 to268 C and T10%5 488 to 477 C).