反应详情

A perfluorinated polymer precursor (film thickness: 25 μm, sulfonyl fluoride form, EW1100) was treated with 1,1,3,3-tetramethylguanidine in dimethylformamide (DMF) solution at 90° C. for 24 hr. After washing with water, the membrane was dried under a vacuum plate at 75° C. The absorption by C═N was observed at 1525-1580 cm−1 by FT-IR, and C═N and N—CH3 peak was observed at 162 and 39.5 ppm by C-NMR, respectively. Tetramethlguanidine functionalized perfluorinated polymers were further treated with dimethyl sulfate (DMS) in DMF at 90° C. for 24 hr. Pentamethylguanidine functionalized perfluorinated polymer was obtained. Guanidine functionalized perfluorinated polymers were further treated with 1 M NaOH for 4 hr at boiling temperature followed by washing with water.

1. washAfter washing with water
2. customthe membrane was dried under a vacuum plate at 75° C
3. customThe absorption by C═N
4. additionTetramethlguanidine functionalized perfluorinated polymers were further treated with dimethyl sulfate (DMS) in DMF at 90° C. for 24 hr