Browse > Article
http://dx.doi.org/10.5012/bkcs.2013.34.6.1763

Highly Sulfonated Poly(Arylene Biphenylsulfone Ketone) Block Copolymers Prepared via Post-Sulfonation for Proton Conducting Electrolyte Membranes  

Lee, Kyu Ha (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University)
Chu, Ji Young (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University)
Kim, Ae Rhan (Division of Chemical Engineering, Chonbuk National University)
Nahm, Kee Suk (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University)
Yoo, Dong Jin (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University)
Publication Information
Abstract
A series of the block copolymers were successfully synthesized from post-sulfonated hydrophilic and hydrophobic macromers via three-step copolymerization. The degrees of sulfonation (DS) of the copolymers (10%, 30%, or 50%) were controlled by changing the molar ratio of the hydrophilic and hydrophobic parts. The resulting block copolymers were characterized by $^1H$ NMR and other technologies. The membranes were successfully cast using dimethyl sulfoxide (DMSO) solution at $100^{\circ}C$. The copolymers were characterized to confirm chemical structure by $^1H$ NMR and FT-IR. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) demonstrated that all sulfonated block copolymers exhibited good thermal stability with an initial weight loss at temperatures above $240^{\circ}C$. The membranes showed acceptable ion exchange capacity (IEC) and water uptake values in accordance with DS. The maximum proton conductivity was 184 mS $cm^{-1}$ in block copolymer-50 at $60^{\circ}C$ and 100% relative humidity, while the conductivity of Nifion-115 was 160 mS $cm^{-1}$ under the same measurement conditions. AFM images of the block copolymer membranes showed well separated the hydrophilic and hydrophobic domains. From the observed results it is that the prepared block membranes can be considered as suitable polymer electrolyte membranes for the application of polymer electrolyte membrane fuel cells (PEMFC).
Keywords
Proton exchange membrane; Post-sulfonation; Thermal stability; Ion conductivity; Morphology;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Gomes, D.; Roeder, J.; Ponce, M. L.; Nunes, S. P. J. Membr. Sci. 2007, 295, 121-129.   DOI   ScienceOn
2 Zaidi, S. M. J.; Mikhailenko, S. D.; Robertson, G. P.; Guiver, M. D.; Kaliaguine, S. J. Membr. Sci. 2000, 173, 17-34.   DOI   ScienceOn
3 Lin, H.-L.; Yu, T. L.; Han, F.-H. J. Polym. Research 2006, 13, 379-385.
4 Bai, Z.; Rodrigues, S. J.; Dang, T. D. J. Membr. Sci. 2011, 383, 189-196.   DOI   ScienceOn
5 Lee, H.-S.; Badami, A. S.; Roy, A.; McGrath, J. E. J. Polym. Sci.: Part A: Polym. Chem. 2007, 45, 4879-4890.   DOI   ScienceOn
6 Hickner, M. A.; Ghassemi, H.; Kim, Y. S.; Einsla, B. R.; McGrath, J. E. Chem. Rev. 2004, 104, 4587-4611.   DOI   ScienceOn
7 Nakano, T.; Nagaoka, S.; Kawakami, H. Polym. Adv. Technol. 2005, 16, 753-757.   DOI   ScienceOn
8 Bae, B.; Yoda, T.; Miyatake, K.; Uchida, H.; Watanabe, M. Angew. Chem. Int. Ed. 2010, 49, 317-320.   DOI   ScienceOn
9 Bae, B.; Hoshi, T.; Miyatake, K.; Watanabe, M. Macromolecules 2011, 44, 3884-3892.   DOI   ScienceOn
10 Hyun, S. H.; Kim, A. R.; Nahm, K. S.; Yoo, D. J. Bull. Korean Chem. Soc. 2012, 33, 375-376.   DOI   ScienceOn
11 Chu, J. Y.; Kim, A. R.; Nahm, K. S.; Lee, H.-K.; Yoo, D. J. Int. J. Hydrogen Energy 2013, 38, 6268-6274.   DOI   ScienceOn
12 Yoo D. J.; Hyun, S. H.; Kim, A. R.; Kumar, G. G.; Nahm, K. S. Bull. Korean Chem. Soc. 2011, 32, 4041-4048.   DOI   ScienceOn
13 Lee, K. H.; Chu, J. Y.; Kim, A. R.; Nahm, K. S.; Kim, C.-J.; Yoo, D. J. J. Membr. Sci. 2013, 434, 35-43.   DOI   ScienceOn
14 Wang, L.; Meng, Y. Z.; Wang, S. J.; Hay, A. S. J. Polym. Sci. Part A: Polym. Chem. 2004, 42, 1779-1788.   DOI   ScienceOn
15 Schauer, J.; Brozova, L. J. Membr. Sci. 2005, 250, 151-157.   DOI   ScienceOn
16 Zhao, Y.; Yin, J. J. Membr. Sci. 2010, 351, 28-35.   DOI   ScienceOn
17 Jeong, M.-H.; Lee, K.-S.; Hong, Y.-T.; Lee, J.-S. J. Membr. Sci. 2008, 314, 212-220.   DOI   ScienceOn
18 Jeong, M.-H.; Lee, K.-S.; Lee, J.-S. J. Membr. Sci. 2009, 337, 145-152.   DOI   ScienceOn
19 Yoo, D. J.; Hyun, S. H.; Kim, A. R.; Kumar, G. G.; Nahm, K. S. Polym. Int. 2011, 60, 85-92.   DOI   ScienceOn
20 Gosalawit, R.; Chirachanchai, S.; Shishatskiy, S.; Nunes, S. P. J. Membr. Sci. 2008, 323, 337-346.   DOI   ScienceOn