Some modified attapulgites (ATPs), such as surface modified by amino (‐NH₂) or polymethylmethacrylate (PMMA) were used to prepare polyvinylidene fluoride (PVDF)/ATP composite ultrafiltration membranes by nonsolvent induced phase separation method. The excellent compatibility between PMMA or amino and PVDF may promote the dispersion of ATP in PVDF. The thermal, mechanical, hydrophilic, and micro‐morphology of the composite ultrafiltration membranes were characterized. The results showed that with the addition of the modified ATP, the properties of the membranes, such as mechanical and hydrophilic, were improved. When the content of ATP‐g‐PMMA was 2%, the overall performance of the PVDF composite membranes was the best.

中文翻译：

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聚偏二氟乙烯/改性凹凸棒复合超滤膜的制备

使用一些改性的凹凸棒（ATPs），例如用氨基（-NH ₂）或聚甲基丙烯酸甲酯（PMMA）进行表面改性，通过非溶剂诱导相分离法制备了聚偏二氟乙烯（PVDF）/ ATP复合超滤膜。PMMA或氨基与PVDF之间的优异相容性可促进ATP在PVDF中的分散。表征了复合超滤膜的热，机械，亲水性和微观形态。结果表明，通过添加改性的ATP，改善了膜的性能，如机械性能和亲水性。当ATP-g-PMMA的含量为2％时，PVDF复合膜的整体性能最佳。