Stabilized sulfonated aromatic polymers by in situ solvothermal cross-linking
The cross-link reaction via sulfone bridges of sulfonated polyether ether ketone (SPEEK) by thermal treatment at 180°C in presence of…
Anion-Conducting Ionomers: Study of Type of Functionalizing Amine and Macromolecular Cross-Linking
Anion exchange membranes (AEM) were prepared by chloromethylation and amination of polysulfone (PSU) and polyphenylsulfone (PPSU). The reaction pathways were…
Theoretical and Experimental Infrared Spectra of Hydrated and Dehydrated Sulfonated Poly(Ether Ether Ketone)
Time-dependent FT-IR spectra of sulfonated poly(ether ether ketone) during dehydration show diminishing 1081 cm−1 and 1023 cm−1 band intensities concurrent with the emergence and…
Chemomechanics of Acidic Ionomers: Hydration Isotherms and Physical Model
The hydration isotherms of various ionomers (Nafion, Sulfonated Poly-Ether-Ether-Ketone, Sulfonated Poly-Phenyl-Sulfone) were measured and described by a thermodynamic model, assuming ideality and a linear relation between…
Cation-Conducting Ionomers Made by Ion Exchange of Sulfonated Poly-Ether-Ether-Ketone: Hydration, Mechanical and Thermal Properties and Ionic Conductivity
The hydration in liquid water of various thermally treated SPEEK membranes was determined and confronted with data in saturated water…