| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a composite polymer electrolyte membrane, which contains an aromatic hydrocarbon-based polymer fiber suitable for compounding with polymer electrolyte and is hardly soluble in solvents, without using such a method as melt blowing or electrolytic spinning by laser beam melting; and to provide a composite polymer electrolyte membrane that is excellent in ionic conductivity, and is controlled from dimensional change and from deterioration of mechanical strength both in a hydrated state. <P>SOLUTION: The method for producing the composite polymer electrolyte membrane is a method for producing a composite polymer electrolyte membrane comprised of an aromatic hydrocarbon-based polymer fiber and a polymer electrolyte membrane, and comprises: a step of making up a nonwoven fabric by electrolytic spinning using spinning stock solution comprised of an aromatic hydrocarbon-based polymer containing a solubility-giving group and a solvent; and a step of impregnating an electrolytic polymer solution to the nonwoven fabric. The spun aromatic hydrocarbon-based polymer fiber is made insoluble in the electrolytic polymer solution by removing the solubility-giving group before the step of impregnating the electrolytic polymer solution. Moreover, the composite polymer electrolyte membrane is a composite polymer electrolyte membrane consisting an aromatic hydrocarbon-based polymer nonwoven fabric and a polymer electrolyte. Since the aromatic hydrocarbon-based polymer nonwoven fabric and the polymer electrolyte have the same polymer structure, the both has compatibility. <P>COPYRIGHT: (C)2012,JPO&INPIT |
