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基于强氢键作用的超分子微纳米涂层改性滤膜
作者:
作者单位:

1.浙江海洋大学 船舶与海运学院;2.浙江海洋大学 海洋工程装备学院;3.江苏大学 能源与动力工程学院

基金项目:

国家自然科学基金（51606168）；江苏大学高级人才科研启动基金（21JDG048）；教指委高等学校能源动力类教学研究与实践项目（NDJZW2021Z-45）


Supramolecular micro-nano coating based on strong hydrogen bonding modified filter membrane
Author:
Affiliation:

1.School of Naval Architecture and Maritime,Zhejiang Ocean University;2.School of Marine Engineering Equipment,Zhejiang Ocean University;3.School of Energy and Power Engineering,Jiangsu University

Fund Project:

National Natural Science Foundation of China (No. 51606168); Senior Talents Research Fundation of Jiangsu University (21JDG048); Research and Practice Project of Energy and Power Teaching in Colleges and Universities (NDJZW2021Z-45)

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    摘要:

    为解决油水分离滤膜循环使用性差的问题，采用超分子鞣酸-聚乙烯醇（TA-PVA）黏结剂黏附鞣酸-铜（TA-CuⅡ）形成鞣酸-聚乙烯醇-铜（TA-PVA-CuⅡ）涂层改性聚偏氟乙烯（PVDF）膜，制备具有稳固微纳米涂层的超亲水/水下超疏油TA-PVA-CuⅡ@PVDF滤膜。结果表明，在亲水性TA-PVA-CuⅡ微纳米涂层的作用下，TA-PVA-CuⅡ@PVDF膜的水接触角和水下油接触角分别可达到0°和151.0°，其对乳化油的分离膜通量和分离效率分别可达1169.30 L /(m2·h)和99.99%，展现出优异的油水分离性能。此外，对比分析二价铜离子改性时间对TA-PVA-CuⅡ@PVDF膜循环使用性以及涂层耐久性的影响，发现二价铜离子改性时间为20 min时，TA-PVA-CuⅡ@PVDF膜循环稳定性和耐久性最佳，具有15次的循环分离次数，并且通量改变率为6.6%。

    Abstract:

    In order to solve the issue of poor recyclability of oil/water separated filter membrane, tannic acid-copper (TA-CuⅡ) was adhered by supramolecular binder of tannic acid-polyvinyl alcohol (TA-PVA) to form tannic acid-polyvinyl alcohol-copper (TA-PVA-CuⅡ) coating modified polyvinylidene fluoride (PVDF) filter membrane, and the superhydrophilic/underwater superoleophobic TA-PVA-CuⅡ@PVDF membrane with stable micro-nano coating was prepared. The results showed that under the function of hydrophilic micro-nano coating of TA-PVA-CuⅡ, the water contact angle and underwater oil contact angle of TA-PVA-CuⅡ@PVDF membrane respectively was 0° and 151.0°. In addition, the membrane flux and separation efficiency of TA-PVA-CuⅡ@PVDF membrane about emulsified oil could reach 1169.30 L/(m2·h) and 99.99%, respectively, which exhibited excellent oil/water separation performance. Moreover, the effect of CuⅡ modification time on the recyclability and coating durability of TA-PVA-CuⅡ@PVDF membrane was compared and analyzed. It was found that the TA-PVA-CuⅡ@PVDF membrane modified by CuⅡ for 20 min had the best recyclability and coating durability with 15 cycles of separation times and the flux change rate of which was 6.6%.

    参考文献
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曹雪,蔡苗苗,李玉乐,韩志,高军凯.基于强氢键作用的超分子微纳米涂层改性滤膜[J].精细化工,2024,41(4):

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  • 收稿日期:2023-03-07
  • 最后修改日期:2023-08-05
  • 录用日期:2023-08-07
  • 在线发布日期: 2024-04-11
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