| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.1664 |
| 발표분야 |
에너지 |
| 제목 |
Amphiphilic poly(vinylidene fluoride-co-chlorotrifluoroethylene)-g-poly(styrene sulfonic acid) graft polymer electrolytes: preparation, characterization and applications to Fuel Cells |
| 초록 |
A graft amphiphilic copolymer P(VDF-co-CTFE)-g-PSSA with 47 wt% of PSSA was synthesized via atom transfer radical polymerization (ATRP). This copolymer was combined with titanium isopropoxide (TTIP) to produce graft copolymer/TiO2 nanocomposite membranes via sol-gelreaction. TiO2 precursor (TTIP) was selectively incorporated into the hydrophilic PSSA domains of the graft copolymer and grown to form TiO2 nanoparticles, as confirmed by FT-IR and UV-visible spectroscopy. Water uptake and ion exchange capacity (IEC) decreased with TTIP contents due to the decrease in number of sulfonic acid in the membranes. The proton conductivity decreased with increasing TTIP concentration. However,the proton conductivity of membranes was not significantly decreased upon the addition of5 wt% of TTIP, at which the mechanical properties of membranes were the greatest. The mechanical properties of membranes increased while maintaining the proton conductivity of 0.021S/cm at room temperature. |
| 저자 |
고종관, 변수진, 연승현, 서진아, 김종학
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| 소속 |
연세대 |
| 키워드 |
ATRP; graft copolymer; polymer electrolyte membrane
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| E-Mail |
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| 원문파일 |
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