| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Synthesis and Characterization of End-Capping Crosslinkable Copolymers for Polymer Electrolyte Membranes |
| 초록 |
Ethynyl-terminated sulfonated-fluorinated poly(arylene ether) copolymers (E-SFx-BP, x refers degree of sulfonation (DS) of the copolymers) were directly copolymerized from potassium 2,5-dihydroxybenzenesulfonate (SHQ), biphenol (BP) and decafluorobiphenyl (DFBP), followed by the reaction of ethynylphenol (EP). The sulfonation degree of E-SFx-BP copolymers was controlled by varying the mole ratio of SHQ and BP. These copolymers were dissolved in aprotic polar solvents such as DMAc, DMSO, DMF, and NMP, and after thermal crosslinking reaction, they were not soluble in any common organic solvents. The crosslinked membranes (C-SFx-BPs) show high proton conductivities at 30 and 90oC in the range of of 53-144 mS/cm and 170-211 mS/cm, respectively. The methanol permeabilities of the membranes at room temperature were in the range of 21-128×10-8 cm2/s and show lower values than that of Nafion 212 (168×10-8 cm2/s). |
| 저자 |
이관수1, 정명환2, 손효경2, 김영제2, 김다영2, 고운2, 이재석2
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| 소속 |
1Virginia Polytechnic Institute and State Univ., 2광주과학기술원 |
| 키워드 |
Crosslinking; Crosslinked membrane; Proton exchange membrane; Proton conductivity; Fuel cell
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| E-Mail |
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