通过聚苯硫醚（PPS）纤维的烷基化交联与磺化反应制得一种强酸离子交换纤维新材料。以此为基础,利用元素分析、红外光谱、原子吸收及化学滴定等手段对其物理化学结构与性能进行分析和表征,考察不同因素对交联与磺化反应的影响及纤维对水溶液中Cr（Ⅲ）的吸附、解吸与再生性能。研究表明,适度交联可有效提高离子交换纤维的化学稳定性,由此制得的PPS基强酸纤维交换容量可达2.634 mmol/g;纤维对水溶液中Cr（Ⅲ）的吸附容量高达59.43 mg/g,经6次吸附洗脱循环后吸附性能亦无明显变化,可望在工业含铬废水处理等工艺中获实际应用。
A strong acid ion exchange fiber was prepared by the Friedel-Crafts crosslinking and sulfonation of PPS fibers.Elemental analysis,infrared spectroscopy,atomic absorption and chemical titration means were used to analyze and characterize its physicochemical structure and properties,and various factors affecting preparation and adsorption of the fibrous materials were investigated.The results show that through the moderate crosslinking,the chemical stability of ion exchange fibers can be improved effectively,and the exchange capacity of prepared fibers rises to 2.634 mmol/g accordingly.The adsorption capacity of the ion exchange fiber is up to 59.43 mg/g for Cr（Ⅲ）,and after six adsorption-desorption cycles its adsorption performances does not change obviously.Owing to the excellent adsorption performances,the ion exchange fiber could be applied in the treatment of waste water containing chromium.
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