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聚乙烯醇杂化三乙烯二胺阴离子交换膜的制备及酸回收性能研究

作者：庞美晶¹，张立卿¹，马衍栋¹，王佳¹，袁志明²

单位： 1. 济南大学土木建筑学院，济南 250022； 2. 山东省环科院环境工程有限公司，济南 250109

关键词：阴离子交换膜；酸回收；扩散渗析； DABCO-COOH

DOI号： 10.16159/j.cnki.issn1007-8924.2026.01.009

分类号： TQ021.4

出版年,卷(期):页码： 2026,46(1):88-95

摘要：

阴离子交换膜（AEMs）是扩散渗析技术的核心组件。本研究利用聚乙烯醇（PVA）和季铵盐材料羧基侧基三乙烯二胺（DABCO-COOH），制备了新型AEMs，通过傅里叶变换红外光谱（FTIR）等表征手段测试了膜的理化性质，并评估了其在酸回收中的应用。研究结果显示，膜M2(即DABCO-COOH添加量为0.4 g时)综合性能最佳，此时膜的含水量（WR）为91.55%，线性溶胀率（LER）为25.43%，离子交换容量（IEC）为1.054 mmol/g，拉伸强度（TS）值为53.4 MPa，断裂伸长率（Eb）值为158.5%，酸渗析系数（UH+）和分离系数（S）值分别为21.1×10-3 m/h和44.5。所制备的新型离子交换膜性能优于商用DF-120膜，并且在酸回收领域展现出较大的应用潜力。

Anion exchange membranes (AEMs) are the core components of diffusion dialysis technology. In this study, the novel AEMs were prepared by using polyvinyl alcohol (PVA) and a carboxyl-containing quaternary ammonium material based on 1,4-diazabicyclo[2.2.2]octane (DABCO-COOH), and the physical and chemical properties of the membranes were tested by Fourier transform infrared spectroscopy and other characterization methods, and its application in acid recovery was evaluated. The research results showed that the overall performance of the membrane M2 obtained when the DABCO-COOH addition amount was 0.4 g was the best. At this time, the water content (WR) of the membrane was 91.55%, linear expansion rate (LER) was 25.43%, and the ion exchange capacity (IEC) was 1.054 mmol/g, with tensile strength (TS) value of 53.4 MPa, elongation at break (Eb) value of 158.5%, dialysis coefficient (UH+) and separation factor (S) values of 21.1×10-3 m/h and 44.5, respectively. The performance of the new ion exchange membranes is better than that of commercial DF-120 membrane, and it shows high application potential in the field of acid recovery.

基金项目：

西部绿色建筑国家重点实验室开放项目(LSKF201807); 横向研究项目(w2021169)

作者简介：

庞美晶（2001-），女，山西阳曲人，硕士研究生，主要研究方向为膜法水处理理论与技术

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