GPs-PVA/MCE多功能杂化膜的制备及性能

doi:10.16085/j.issn.1000-6613.2020-2460

摘要/Abstract

摘要：

地聚物微纳米粒子（GPs）经聚乙烯醇（PVA）修饰后，采用真空抽滤法将其组装在混合纤维素基膜（MCE）表面，得到多功能地聚物颗粒-聚乙烯醇/混合纤维素杂化膜（GPs-PVA/MCE）。本文考察了GPs的添加量对杂化膜结构和性能的影响，通过SEM、FTIR、AFM、XRD等表征杂化膜的结构。结果表明GPs添加量为0.15g时制备的杂化膜性能最佳，水通量为11293L/(m²·h·MPa)。该多功能杂化膜对不同污染物均表现出优异的去除性能：通过孔道截留作用可去除水中100%的50nm聚苯乙烯微球和99.87%的乳化油；通过吸附作用亦可去除水中100%的阳离子型染料；比原始MCE膜分别提升了528.54%、25.78%、90.96%。特别是在连续处理含油乳液时，该杂化膜使用1h后通量仅降低了21.70%，远低于MCE膜的95.70%，说明其抗污染性能得到显著提升，显示出良好的应用潜力。

关键词: 地聚物微纳米颗粒, 聚乙烯醇, 杂化膜, 染料

Abstract:

A multifunctional hybrid membrane was obtained by assembling of geopolymer nanoparticles (GPs) and polyvinyl alcohol (PVA) on the surface of mixed cellulose membrane (MCE) through vacuum filtration. The effects of particle size and amount of GPs on the performance of hybrid membrane were investigated. The results showed that the performance of the hybrid membrane was the best with water flux of 11293L/(m²·h·MPa) when the content of GPs was 0.15g. The structure of the hybrid membrane was characterized by SEM, FTIR, AFM and XRD, and the removal performance of the hybrid membrane for different pollutants was investigated. The results indicated that the removal rate of 50nm polystyrene microspheres and emulsified oil in water could reach 100% and 99.87%, respectively by pore interception. The removal rate of cationic dyes in water could also reach 100% by adsorption. Compared to the original MCE, the removal rate was increased by 528.54%, 25.78% and 90.96%, respectively. When the hybrid membrane was used to filter the oil emulsion in a continuous mode, the fluxes decreased only by 21.70% after 1h operation, while the flux of MCE decreased by 95.70%. The results implied the good antifouling performance of the hybrid membrane, which accordingly had a great potential for practical application in water purification.

Key words: geopolymer nanoparticles, polyvinyl alcohol, hybrid membrane, dye

中图分类号:

TQ352

宋颖, 葛圆圆, 韩玉蓉, 周覃艺, 黄来涛, 周剑. GPs-PVA/MCE多功能杂化膜的制备及性能[J]. 化工进展, 2021, 40(11): 6287-6294.

SONG Ying, GE Yuanyuan, HAN Yurong, ZHOU Qinyi, HUANG Laitao, ZHOU Jian. Preparation and properties of GPs-PVA/MCE multifunctional hybrid membrane[J]. Chemical Industry and Engineering Progress, 2021, 40(11): 6287-6294.

图/表 7

参考文献 35

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样品名称	油类型	压力/MPa	分离效率/%	通量/L·m^-2·h^-1·MPa^-1	参考文献
二氧化硅/PVA纳米纤维膜	正庚烷	0	≥95%	1500	［26］
介孔PVA/SiO₂杂化涂层膜	环己烷	0.09	—	5442.6	［28］
PVA-GO纳米纤维膜	己烷	0	99	45	［29］
纤维素-PVA膜	己烷	0	99.99	37	［30］
PVA/CNTs-PAN	菜籽油	0.02	93	48	［31］
多壁碳纳米管/TiO₂-PVDF纳米纤维膜	己烷	0.1	97.4	8253	［32］
金属-多酚配位复合涂层PVDF膜	正己烷	0.01	98.53	4968	［33］
GPs-PVA/MCE	正十六烷	0.09	99.87	2814	本文

样品名称	油类型	压力/MPa	分离效率/%	通量/L·m^-2·h^-1·MPa^-1	参考文献
二氧化硅/PVA纳米纤维膜	正庚烷	0	≥95%	1500	［26］
介孔PVA/SiO₂杂化涂层膜	环己烷	0.09	—	5442.6	［28］
PVA-GO纳米纤维膜	己烷	0	99	45	［29］
纤维素-PVA膜	己烷	0	99.99	37	［30］
PVA/CNTs-PAN	菜籽油	0.02	93	48	［31］
多壁碳纳米管/TiO₂-PVDF纳米纤维膜	己烷	0.1	97.4	8253	［32］
金属-多酚配位复合涂层PVDF膜	正己烷	0.01	98.53	4968	［33］
GPs-PVA/MCE	正十六烷	0.09	99.87	2814	本文

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