NANOCOMPOSITE FILM COMPRISING POLYHEDRAL OLIGOMERIC FORM OF SILSESQUIOXANE CONTAINING SULFONIC ACID GROUPS AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a sulfonated polyetheretherketone (sPEEK) nanocomposite film containing silsesquioxane and exhibiting excellent proton conductivity and mechanical strength, and a method for manufacturing the same. The nanocomposite film of the present invention has excellent conductivity since multiple sulfonic acid groups as a proton source exist in POSS used as a filler. In addition, the POSS used in the present invention is very small, having a size of 1-2 nm, and thus hardly obstructs the migration of protons in the ion channel in the polymer membrane, thereby realizing excellent proton conductivity. In addition, the proton conductive nanocomposite film by the present invention shows excellent mechanical strength even though the degree of sulfonation of sulfonated polyetheretherketone is increased.