| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 |
29권 2호, p.33 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Sulfonated Poly(ether ketone ketone) Ionomers as Proton Exchange Membranes |
| 초록 |
Sulfonated poly(ether ketone ketone) ionomers (SPEKK) with ion-exchange capacities (IEC) between 0.2 and 3.0 meq/g were prepared by sulfonating PEKK with a mixture of concentrated and fuming sulfuric acid. Sulfonation occurs only on the phenyl rings attached to ether and ketone groups. The glass transition temperature of the dry SPEKK ionomers increased linearly with increasing IEC, and the ionomers were thermally stable to ~260 oC, above which desulfonation occurred. Water-swollen ionomers exhibited microphase separated morphologies, and the average correlation length determined by small angle X-ray scattering increased with increasing IEC. The proton conductivity of hydrated SPEKK membranes measured by impedence spectroscopy ranged from ca. 10-3 to 10-1 S/cm with IEC. |
| 저자 |
전용성1, Robert A. Weiss2
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| 소속 |
1Polymer Science Program, 2Univ. of Connecticut |
| 키워드 |
sulfonated ionomer; poly(ether ketone ketone); PEM fuel cell
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| E-Mail |
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