Citation:
XIE Guang-Liang, LIAO Gui-Hong, WU Fang-Juan, SONG Cai-Sheng. Synthesis and Adsorption Properties of Poly(Aryl Ether Sulfone Ether Ketone Ketone) with Side Carboxyl[J]. Chinese Journal of Applied Chemistry,
;2008, 25(3): 295-299.
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Poly(aryl ether sulfone ether ketone ketone) with side carboxyl(PESEKK-A) attached to the main chain was synthesized by Friedel-Crafts polycondensation of 4,4'-diphenyoxyl diphenyl sulfone(DPODPS) with trimellitic anhydride chloride(TMAC).The structure was determined by 1H NMR and FT-IR.PESEKK-A could only be dissovled in several solvents,such as,concentrated sulfuric acid(98%),dichloroacetic acid,and trifluoroacetic acid,showing high solvent-resistant and corrosion-resistant properties.Adsorptions of Cu2+,Ag+,Cd2+ onto PESEKK-Na were studied.Sodium salt of the resin(PESEKK-Na) exhibited better adsorption ability than PESEKK-A.The optimum pH for the adsorption of Cu2+,Ag+,Cd2+ onto PESEKK-Na were 4.7,4.5 and 5.7,respectively.The adsorption capacities for Cu2+,Ag+,Cd2+ were 1.03 mmol/g,0.815 3 mmol/g,and 0.558 6 mmol/g,respectively.The amount of Cu2+ adsorbed in 2 h was 80.4% that adsorbed in 48 h.90% of the adsorbed Cu2+ desorbed within 1 h in 1 mol/L HCl.From 12℃ to 45℃,the amount of adsorption increased with temperature,and reached 1.049 mmol/g at 45℃.The resin can be reused without loss of its adsorption ability.These results show that PESEKK-Na has potential in the fields of separating valuable metals and environmental protection.
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