| 초록 |
In order to increase the ion conductivity, poly(styrene-ethylene-butylene-styrene)(SEBS) membranes were sulfonated using chlorosulfuric acid at room temperature. And, modified membranes were prepared by grafting using of maleic anhydride(MA). The addition of SO3H and COOH functionality during sulfonation and heating reaction was confirmed by FT-IR and the change of morphology was observed by AFM. The ion conductivity of the fabricated membranes was increased with sulfonization time and then decreased. The optimized reaction time was 7 minutes. To increasing mechanical properties of membrane, cross linking using sulfosuccinic acid(SSA). From the DMA results, the storage modulus was increase by cross liking. |
