以浓硫酸为溶剂,氯甲基丁醚、三甲胺为改性试剂,通过氯甲基化/季铵化两步反应制备了季铵化聚醚砜酮(QAPPESK).详细讨论了两步反应的影响因素.对氯甲基化聚醚砜酮(CMPPESK)进行了1H-NMR核磁表征,测试了CMPPESK、QAPPESK的溶解性和5%热失重温度.将此材料制备成纳滤膜用于染料脱盐,并考察了其耐酸性和抗污染性,发现QAPPESK是较为优异的膜材料.
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