Ultra-thin films based on random copolymers containing perfluoropolyether side chains

Random copolymers were synthesised by copolymerizing methylmethacrylate and perfluoropolyetherur-ethanemethacrylate monomers, differing for the structural unit of the fluorinated chain, its end group and its molecular weight. The copolymers obtained had similar molecular weight and polydispersity, with a fluorine content between 5 and 10% wt/wt; they showed remarkable features such as biphasicity with coexistence of soft domains made of the perfluoropolyether chains and hard domains due to the methylmethacrylate backbone: the glass transition temperature T-g of the soft and hard phases was T-g1