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Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes

Title
Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes
Author
이영무
Keywords
Polybenzothiazoles; Proton exchange membrane; Sulfonated polymer
Issue Date
2015-09
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v. 490, Page. 346-353
Abstract
Two series of sulfonated polybenzothiazoles containing naphthalene, derived from either 2,2-bis(4-carboxyphenyl) hexafluoropropane (6FA) or 2,6 naphthalene dicarboxylic acid (NA) were synthesized by polycondensation with non-sulfonated monomer 2,5-diamino-1,4-benzenedithiol dihydrochloride (DABDT) and sulfonated monomer 4,8-disulfonyl-2,6-naphthalene dicarboxylic acid (DSNA). The sPBT-6FA series polymers containing DSNA were soluble in polar aprotic solvents such as dimethyl sulfoxide or 1-methyl-2-pyrrolidinone, whereas sPBT-NA65 with NA was not soluble in common polar aprotic solvents. Therefore, the incorporation of both the naphthalene and flexible hexafluoroisopropylidene units enhanced the solubility of the sPBT polymer series. The polymers were evaluated as proton exchange membranes and exhibited excellent dimensional stability, high thermal and oxidative stabilities, good mechanical properties, and high proton conductivities. The proton conductivities of sPBT-6FA65 were 025 S cm(-1) at 80 degrees C in water and 0.018 S cm(-1) at 120 degrees C under 35% RH. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S037673881500407Xhttp://hdl.handle.net/20.500.11754/27496
ISSN
0376-7388; 1873-3123
DOI
10.1016/j.memsci.2015.05.005
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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