Method for fabricating a semicrystalline polymer / graphene oxide composite film

摘要

The present invention discloses a semicrystalline polymer/graphene oxide composite film, comprising: a first semicrystalline-typed polymer, distributed in structural space of the composite film and having a porous structure; and graphene oxide, having a layered structure and distributed in the composite film wherein gas passage exist between adjacent layered structures, the first semicrystalline-typed polymer existing between part of adjacent layered structures forms into a second semicrystalline-typed polymer by further heat treatment after the first semicrystalline-typed polymer and graphene oxide are blended uniformly to be distributed in the composite film so as to fill and seal a portion of the porous structure to block gas from flowing to extend path length(s) of gas passage; wherein graphene oxide existing between the first semicrystalline-typed polymers induces formation of the second semicrystalline-typed polymer.

主权项

1. A method for fabricating a semicrystalline polymer/graphene oxide composite film, comprising:
providing a polymer/graphene oxide casting solution by dissolving a polymer in a first solvent to obtain a mixture solution, adding a graphene oxide solution into the mixture solution, and stirring until uniform wherein the graphene oxide solution comprises a second solvent and graphene oxide dispersed in the second solvent; performing a film forming procedure by coating the polymer/graphene oxide casting solution on a substrate to form a first film on the substrate wherein the graphene oxide in the first film has a layered structure and distributed in the polymer; performing a crystallization procedure by drying the first film with heat to form the first film having a first semicrystalline-typed polymer wherein the first semicrystalline-typed polymer has a porous structure and the first semicrystalline-typed polymer and graphene oxide are distributed uniformly in the first film with respect to each other so as to have the first semicrystalline-typed polymer exist between graphene oxide and graphene oxide also exist between the first semicrystalline-typed polymers; performing a recrystallization procedure by having the composite film having the first semicrystalline-typed polymer undergo heat treatment to induce the first semicrystalline-typed polymer polyvinyl alcohol between adjacent layers of graphene oxide to form a second semicrystalline-typed polymer so as to obtain a composite film having the first semicrystalline-typed polymer and the second semicrystalline-typed polymer wherein the second semicrystalline-typed polymer fills and seals the porous structure of the first semicrystalline-typed polymer to block gas from flowing through and to increase a length that gas passes from one side of the composite film to the other side of the composite film.