Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 344, Issue 1-2, Pages 129-135Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2009.07.042
Keywords
Bipolar membrane; Water dissociation; Intermediate layer; Hyperbranched aliphatic polyester; Carboxylated Boltorn (R)
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Funding
- National Science Foundation of China [20636050]
- Key Foundation of Educational Committee of Anhui Province [KJ2007A016, KJ2008A69]
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To further enhance the catalysis of hyperbranched aliphatic polyester Boltorn (R) H30 on water dissociation, it was carboxylated before introduced to the intermediate layer of a bipolar membrane. At a current density of 100 mA/cm(2), the membrane modified with Boltorn (R) H30-COOK can have a voltage drop 1.8 V lower than the membrane modified with Boltorn (R) H30. As for the end groups for modification, -COOK is a better choice than -COOH and -OH because it is the most hydrophilic and the most capable to form intermolecular hydrogen bonds with water molecules. (C) 2009 Elsevier B.V. All rights reserved.
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