A fluoropolymer hybrid organic/inorganic composite comprising inorganic domains, said hybrid being obtained by reaction between: - at least one fluoropolymer comprising recurring units derived from at least one (meth)acrylic monomer [monomer] of formula: wherein each of R1, R2, R3, equal or different from each other, is independently a hydrogen atom or a C 1 -C 3 hydrocarbon group, and R OH is a hydrogen atom or a C 1 -C 5 hydrocarbon moiety comprising at least one hydroxyl group [polymer], wherein polymer is selected from the group consisting of: (F-1) polymers comprising recurring units derived from monomer, from at least one per(halo)fluoromonomer selected from tetrafluoroethylene and chlorotrifluoroethylene (CTFE), and from at least one hydrogenated comonomer selected from ethylene, propylene and isobutylene, optionally containing one or more additional comonomers, typically in amounts of from 0.1 to 30 % by moles, based on the total amount of TFE and/or CTFE and said hydrogenated comonomer(s); (F-2) VDF polymers comprising recurring units derived from monomer, from vinylidene fluoride, and, optionally, from one or more fluorine-containing monomer(s) different from VDF; and - at least one metal compound [compound] of formula: X 4-m AY m wherein m is an integer from 1 to 4, and, according to certain embodiments, from 1 to 3, A is a metal selected from the group consisting of Si, Ti and Zr, Y is a hydrolysable group, X is a hydrocarbon group, optionally comprising one or more functional groups; wherein the inorganic domains are grafted to the polymer through reaction of at least a fraction of the R OH groups of the monomer with at least a fraction of compound. - at least one fluoropolymer comprising recurring units derived from at least one (meth)acrylic monomer [monomer] of formula: wherein each of R1, R2, R3, equal or different from each other, is independently a hydrogen atom or a C 1 -C 3 hydrocarbon group, and R OH is a hydrogen atom or a C 1 -C 5 hydrocarbon moiety comprising at least one hydroxyl group [polymer], wherein polymer is selected from the group consisting of: (F-1) polymers comprising recurring units derived from monomer, from at least one per(halo)fluoromonomer selected from tetrafluoroethylene and chlorotrifluoroethylene (CTFE), and from at least one hydrogenated comonomer selected from ethylene, propylene and isobutylene, optionally containing one or more additional comonomers, typically in amounts of from 0.1 to 30 % by moles, based on the total amount of TFE and/or CTFE and said hydrogenated comonomer(s); (F-2) VDF polymers comprising recurring units derived from monomer, from vinylidene fluoride, and, optionally, from one or more fluorine-containing monomer(s) different from VDF; and (F-1) polymers comprising recurring units derived from monomer, from at least one per(halo)fluoromonomer selected from tetrafluoroethylene and chlorotrifluoroethylene (CTFE), and from at least one hydrogenated comonomer selected from ethylene, propylene and isobutylene, optionally containing one or more additional comonomers, typically in amounts of from 0.1 to 30 % by moles, based on the total amount of TFE and/or CTFE and said hydrogenated comonomer(s); (F-2) VDF polymers comprising recurring units derived from monomer, from vinylidene fluoride, and, optionally, from one or more fluorine-containing monomer(s) different from VDF; and - at least one metal compound [compound] of formula: X 4-m AY m wherein m is an integer from 1 to 4, and, according to certain embodiments, from 1 to 3, A is a metal selected from the group consisting of Si, Ti and Zr, Y is a hydrolysable group, X is a hydrocarbon group, optionally comprising one or more functional groups; wherein the inorganic domains are grafted to the polymer through reaction of at least a fraction of the R OH groups of the monomer with at least a fraction of compound.