The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.

The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.

A film layer and a method of forming a film layer are provided herein. The film layer includes a first polymer and a second polymer. The first polymer includes the reaction product of chlorotrifluoroethene and vinylidene fluoride utilized in the first polymer in an amount of at least 4 wt. %. The second polymer includes the reaction product of chlorotrifluoroethene and optionally, vinylidene fluoride utilized in the second polymer in an amount of less than 4 wt. %. A multilayer film and a method of forming a multilayer film are also provided herein. In an embodiment, a multilayer film includes a first film layer and a second film layer adjacent and sealed to the first film layer. At least one of the first film layer or the second film layer includes the first polymer and the second polymer.

The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.

The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.

A film layer and a method of forming a film layer are provided herein. The film layer includes a first polymer and a second polymer. The first polymer includes the reaction product of chlorotrifluoroethene and vinylidene fluoride utilized in the first polymer in an amount of at least 4 wt. %. The second polymer includes the reaction product of chlorotrifluoroethene and optionally, vinylidene fluoride utilized in the second polymer in an amount of less than 4 wt. %. A multilayer film and a method of forming a multilayer film are also provided herein. In an embodiment, a multilayer film includes a first film layer and a second film layer adjacent and sealed to the first film layer. At least one of the first film layer or the second film layer includes the first polymer and the second polymer.