以聚丙烯接枝苯乙烯纤维(PP-g-ST)为原料,经过酰基化、胺基化和甲基膦酸化反应制备了四乙烯五胺基膦酸螯合纤维(TEPAPCF),采用 L16(45)正交实验法对甲基膦酸化反应的条件进行了优化,TE-PAPCF对Cu2+的吸附容量达到2.20mmol/g。并通过SEM、光电子能谱、IR、TG、XRD 和机械强度测试进行了表征和性能测试。吸附性能测试结果显示, TEPAPCF对Fe3+和 In3+具有很好的吸附选择性,对Fe2+和Fe3+的吸附能力大于类似结构的树脂。
Tetraethylenepentamine phosphonic chelating fiber (TEPAPCF)was successfully prepared after acy-lation,amination and methyl phosphorylation of propylene fiber grafted with styreneylbenzene(PP-g-ST).The reaction conditions of methyl phosphorylation were optimized by the way of L16 (45 )orthogonal test.The best adsorption capacity of Cu2+ on TEPAPCF was 2.20mmol/g.SEM,photoelectron spectroscopy,IR,TG,XRD and mechanical strength test were used to investigate the structure and properties of TEPAPCF.The result of adsorption performance test shows that TEPAPCF has good adsorption selectivity to Fe3+ and In3+,and greater adsorption ability of Fe2+ and Fe3+ than the resins with similar structure.
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