利用常压介质阻挡放电(DBD)等离子体技术,在非对称聚丙烯腈(PAN)超滤膜的表层微孔内接枝填充聚合聚乙二醇甲基丙烯酸酯(PEO360OHMA)大分子单体,制备具有芳烃优先透过性能的渗透汽化复合膜.采用衰减全反射傅里叶红外光谱(ATR-FTIR)、水接触角和扫描电子显微镜(SEM)表征复合膜的形貌和化学结构.以质量比为m(甲苯)∶m(正庚烷)=1∶4的甲苯/正庚烷混合物(80℃)为模型体系,考察了DBD处理时间、输入电压和接枝单体浓度对复合膜的接枝度和渗透汽化分离性能的影响.研究结果表明,常压介质阻挡放电等离子体技术制备的渗透汽化复合膜具有较好的芳烃/烷烃分离性能.
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