| 摘要 |
The present invention relates to a sulfonated hydrocarbon nanocomposite membrane having sulfonated polyetheretherketone (sPEEK), sulfonated polyetherketone (sPEK), sulfonated polyethersulfone (sPES) or sulfonated polyarylethersulfone (sPAES) to which silsesquioxane with improved proton conductivity and mechanical strength is introduced, and a method of preparing the sulfonated hydrocarbon nanocomposite membrane. The nanocomposite membrane according to the present invention has a plurality of sulfonic acid groups as a proton source in polyhedral oligomeric silsesquioxane (POSS) which is used as filler for a nanocomposite membrane, thereby improving conductivity. Also, proton conductivity can be improved since the POSS according to the present invention is too small and rarely prevents protons from moving in an ion channel within a polymer membrane. Also, since a proton conductive nanocomposite membrane according to the present invention introduces the sulfonated POSS into a hydrocarbon polymer including sPEED, sPEK, sPES, and sPAES, tensile strength, yield strength, and ductility can be improved at the same time, and the certain ratio of contents in the nanocomposite membrane maximizes the above-mentioned properties. |
