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聚醚砜复合超滤膜的制备及其油水分离性能
作者:    蔡新安 
单位:(景德镇学院 江西 景德镇 333000) 
关键词:聚醚砜复合膜 油水分离 抗污染 甲基丙烯酸羟乙酯 
分类号:TQ028
出版年,卷(期):页码:2020,48(4):0-0
DOI:
摘要:

 摘  要:采用表面引发的电子转移再生活化剂原子转移自由基聚合,制备表面接枝有聚甲基丙烯酸羟乙酯链段的无机纳米粒子(SiO2–g-PHEMA)。将SiO2–g-PHEMA作为亲水性添加剂,与聚醚砜(PES)共混,制备PES/SiO2–g-PHEMA有机–无机复合膜。透射电子显微镜观察结果表明,改性后的SiO2–g-PHEMA纳米粒子可以均匀地分散在铸膜液体系中,并在成膜过程中向膜表面迁移富集,显著提高膜表面的亲水性(接触角由84.5°降至71.9°)。当纳米粒子的含量为1.0% (质量分数)时,此时膜拥有最大的纯水通量208.68 L/(m2·h)和油水通量86.86 L/(m2·h),而未改性的PES空白膜分别只有64.10和11.09 L/(m2·h)。相对于PES空白膜,通量恢复率从45.74%提高至78.32%,抗油污染能力大幅增强。而且,得益于PHEMA链段与PES链段之间的物理缠结及氢键作用,SiO2–g-PHEMA纳米粒子在PES膜中表现出良好的稳定性,表明该材料具有良好的应用前景。

基金项目:
江西省教育厅科技项目(GJJ161283);景德镇市科技计划项目(2017GYZD021-03)。
作者简介:
参考文献:

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