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US 9,382,367 B2Granted
Polymer electrolyte membrane composed of aromatic polymer membrane base and method for producing the same
AssigneeJapan Atomic Energy Agency
InventorsYasunari Maekawa, Shin Hasegawa, Yasuyuki Suzuki
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Abstract
Provision of, and a method for production of, a polymer electrolyte membrane, which is characterized by introducing a vinyl monomer into an aromatic polymer membrane substrate, typified by polyether ether ketone, polyether imide, or polysulfone, as graft chains by graft polymerization, and then chemically converting some of the graft chains or/and part of the aromatic polymer chain into sulfonic groups.
Claims14
A polymer electrolyte membrane, comprising:
- the membrane prepared by
- graft-polymerizing a vinyl monomer onto an aromatic polymer membrane substrate by immersing the aromatic polymer membrane substrate into a liquid comprising the vinyl monomer and an amide-base solvent, thereby obtaining graft chains on the aromatic polymer membrane substrate, and
- then, chemically converting some of the graft chains into sulfonic groups,
- wherein only the some of the graft chains have been converted into sulfonic groups.
1 more element
A polymer electrolyte membrane, comprising:
- the membrane prepared by
- graft-polymerizing a vinyl monomer onto an aromatic polymer membrane substrate by immersing the aromatic polymer membrane substrate into a liquid comprising the vinyl monomer and an amide-base solvent, thereby obtaining graft chains on the aromatic polymer membrane substrate, and
- then, chemically converting parts of aromatic polymer chains of the aromatic polymer membrane into sulfonic groups,
- wherein only the parts of the aromatic polymer chains have been converted into sulfonic groups.
1 more element
Dependencies are inferred from the claim text.