聚苯硫醚基强酸离子交换纤维的合成、表征和吸附性能研究

novel strong acid ion exchange fiber (HO3S-BC-XDC-PPS) was prepared via crosslinking and grafting copolymerization of 1,4-bischloromenthyl benzene (XDC), benzyl chloride (BC) on polyphenylene sulfide (PPS) matrix, as well as following sulfonation reaction. The physicochemical structures and properties of the fibrous ion exchange materials were characterized with FT-IR, SEM, TGA, element analysis and chemical titration, respectively. Compared with the preparation of traditional PP-ST-DVB based ion exchange fibers, the syntheses strategy of PPS based strong acid ion exchange fiber avoided the complicated irradiation grafting process with 60Co or other radiation facilities. Owing to the existing of thioether (Ar-S-Ar) and sulfoxide (-SO-) unit in fibrous matrix, a super-equivalent adsorption phenomenon for Cu(II) ion was observed. The HO3S-BC-XDC-PPS fiber possessed high exchange capacity (about 3.70mmol/g), excellent heat stabilities, and the exchange capacity and desorption rate were not decreased after six adsorption desorption cycles.