Patent ID: 9676913
Date: 2017-06-13
CPC Classifications: B01D,C08J

Claim:
1. A method for producing a porous polymer film using vanadium oxide nanowires as a template to allow control of a uniform pore size and density of the porous polymer film, the method comprising the steps of: (A) adding an ion exchanger to deionized water to perform acidification to a pH of 2.0-2.5 and adding a vanadate compound thereto to grow vanadium oxide nanowires by a sol-gel process, producing a resultant solution of grown nanowires; (B) mixing the resultant solution of grown nanowires with a polymer solution and a surfactant to provide a mixed solution of nanowires; (C) pouring the mixed solution of nanowires to a mold, followed by drying and curing, to form a film; and (D) etching the resultant film with an etching solution to remove the vanadium oxide nanowires, wherein the polymer solution is provided in step (B) in an amount of 10-30 parts by weight per part by weight of the vanadate compound, wherein the surfactant is mixed in an amount of 10-70 parts by weight based on 100 parts by weight of the polymer solution, and wherein the pores in the porous polymer film have a rectangular column shape.