| 초록 |
Sulfonated amine-poly(ether sulfone)s (S-APES)s were prepared by nitration, reduction and sulfonation of poly(ether sulfone) (ultrason®-S6010). Poly(ether sulfone) was reacted with ammonium nitrate and trifluoroacetic anhydride to produce the nitrated poly(ether sulfone), and followed reduction using tin(Ⅱ)chloride and sodium iodide as reducing agents to give the amino-poly(ether sulfone). The S-APES was obtained by reaction of 1,3-propanesultone and the amino-poly(ether sulfone) (NH2-PES) with sodium methoxide. Different contents of sulfonated unit of the S-APES were studied by FT-IR, 1H-NMR spectroscopy, differential scanning calorimetry (DSC), and thermo gravimetric analysis (TGA). The S-APES membranes exhibit conductivities (25 ℃) from 1.05 x 10-3 to 4.83 x 10-3 S/cm, water swell from 30.25 to 66.50 %, IEC from 0.38 to 0.82 meq/g and methanol diffusion coefficients from 3.10 x 10-7 to 4.82 x 10-7 cm2/S at 25 ℃. |
