| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separator for a nonaqueous electrolytic electricity storage device including an improved epoxy resin porous membrane. <P>SOLUTION: In a separator for a nonaqueous electrolytic electricity storage device, a ratio I/Io between a peak intensity Io of an absorption peak existing at 1,240 cm<SP POS="POST">-1</SP>in an infrared absorption spectrum of an epoxy resin porous membrane and a peak intensity I of a peak existing at 1,240 cm<SP POS="POST">-1</SP>in the infrared absorption spectrum of the epoxy resin porous membrane after the porous membrane has been subjected to acetic anhydride treatment is 1.0 or more and 2.4 or less. The amount of active hydroxyl groups present in the epoxy resin porous membrane can be evaluated by the value of the ratio I/Io. <P>COPYRIGHT: (C)2013,JPO&INPIT |
