599205-72-8Relevant articles and documents
Poly(phthalazinone ether ketone) ionomers synthesized via N-C coupling reaction for fuel cell applications
Chen, Yu-Lin,Meng, Yue-Zhong,Li, Xiu-Hua,Hay, Allan S.
, p. 10007 - 10013 (2005)
Sulfonated poly(phthalazinone ether ketone)s with different sulfonation degrees were directly polymerized via N-C coupling reaction. The resulting polymers with inherent viscosity ranging from 0.97 to 1.29 dL/g were characterized by 1H NMR and elemental analysis. Membranes were obtained by casting 5% solution in DMAc (N,N′-dimethylacetamide) of the polymers at 60°C. Because of their specially designed structure, the membranes of the polymer have excellent thermal and oxidative stability. TGA curves showed that the loss of sulfonic groups occurred at around 300°C. The membranes demonstrated excellent acidic stability; their forms could be maintained for at least 47 h when subjected to Fenton's reagent (30 ppm FeSO4 in 30% H2O2) at 25°C. For the polymer with a sulfonation degree of 2, the highest water uptake of 46% at 80°C and the best proton conductivity of 1.77 × 10-2 S/cm at 95°C 100% relative humidity were obtained, and a low Ea of 5.6 kJ/mol was calculated.