Polyacrylates Containing the Hexafluoroisopropylidene Function in the Pendant Groups

Conclusions

New acrylic monomers containing the hexafluoroisopropylidene function in the pendant group have been synthesized, and their homopolymerization or copolymerization with nonfluorinated acryclic comonomers was performed by free-radical bulk techniques. Colorless, transparent films were cast from polymer solutions. The inclusion of a hexafluoroisopropylidene group in these polymers led to increased thermal stability and increased T_g. When the pendant group containing 6F also had some methylene units the thermal stability of the corresponding polymers and copolymers was influenced predominantly by these aliphatic groups rather than by the 6F groups. Fluorinated homopolymers showed no water absorption as measured to the nearest 0.1 wt%. Additional properties of these polymers are under investigation.