| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Preparation and Characterization of Sulfonated Poly(ether sulfone) Using 4,4-Bis(4-hydroxylphenyl)valeric acid for Proton Exchange Membrane Fuel cell Application |
| 초록 |
Poly(ether sulfone)s (PES) containing 25-75 mol % valeric acid were prepared with bisphenol A, bis(4-chlorophenyl)sulfone and 4,4-Bis(4-hydroxylphenyl)valeric acid using potassium carbonate in DMAc (dimethylacetamide) at 160 ℃. Copolymers containing carboxylacid group were reduced to hydroxy group by BH3 solution 1M in THF and NaBH4 co-catalyst. Sulfonated poly(ether sulfone)s (S-PES) were obtained by reaction of 1,3-propanesultone and the reduced copolymer (PES-OH) with potassium t-butoxide. A series of copolymers were studied by 1H-NMR spectroscopy, differential scanning calorimetry (DSC), and thermo gravimetric analysis (TGA). Sorption experiments were conducted to observe the interaction of sulfonated polymers with water and methanol. The S-PES membranes exhibited proton conductivities from 1.20 10-3 to 3.40 10-3 S/cm, water swell from 12.25 to 31.50 %, IEC from 0.43 to 0.72 meq/g and methanol diffusion coefficients from 3.60 10-7 to 4.90 10-7 cm2/S at 25 ℃. |
| 저자 |
임영돈1, 서동완1, 셔리풀1, 이순호1, 문상호1, 변상용2, 김환기1
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| 소속 |
1건국대, 2부경대 |
| 키워드 |
연료전지; 술포네이션; 고분자; 수소이온교환전지
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| E-Mail |
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