| 林丹妮,周乐媛,张健,胡思丝,苗庆显,黄六莲,汪东.层层自组装协同界面聚合构筑醋酸纤维素纳滤膜及其性能研究[J].中国造纸学报,2026,41(3):242-250 |
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| 层层自组装协同界面聚合构筑醋酸纤维素纳滤膜及其性能研究 |
| Study on Preparation and Properties of Cellulose Acetate Nanofiltration Membrane via Layer-by-layer Self-assembly and Cooperative Interface Polymerization |
| 投稿时间:2025-12-18 修订日期:2026-01-23 |
| DOI:10.11981/j.issn.1000-6842.2026.03.242 |
| 中文关键词: 醋酸纤维素 纳滤膜 层层自组装 界面聚合 抗污染 |
| Key Words:cellulose acetate nanofiltration membrane layer-by-layer self-assembly interface polymerization anti-fouling |
| 基金项目:福厦泉国家自主创新示范区协同创新平台项目3502ZCQXT2022006福厦泉国家自主创新示范区协同创新平台项目(3502ZCQXT2022006)。 |
| 作者 | 单位 | 邮编 | | 林丹妮* | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 周乐媛 | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 张健 | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 胡思丝 | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 苗庆显 | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 黄六莲* | 福建农林大学材料工程学院,福建福州,350108 | 350108 | | 汪东* | 福建农林大学材料工程学院,福建福州,350108 | 350108 |
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| 中文摘要: |
| 本研究利用壳聚糖(CS)和单宁酸(TA)丰富的官能团(羟基和氨基),在醋酸纤维素膜上层层自组装构建活性交联层,调控界面聚合反应中多乙烯多胺(PEPA)与1,3,5-均苯三甲酰氯(TMC)的反应速率,以稳定固载聚酰胺活性层,从而构筑高性能醋酸纤维素纳滤膜。结果表明,当TA溶液、CS溶液、PEPA溶液和TMC/正己烷溶液质量浓度分别为1.2、1.2、5和0.5 g/L时,制得醋酸纤维素纳滤膜(CA-NF-1膜)的分离性能最佳,对NaCl、MgCl2、MgSO4、Na2SO4的截留率分别为85.0%、93.8%、92.0%、88.0%,其水通量不低于9.3 L/(m²·h);对亚甲基蓝、刚果红、孟加拉玫瑰红和甲基橙的截留率均超过97%;3次牛血清白蛋白污染-冲洗循环后,CA-NF-1膜的水通量仅下降0.2 L/(m²·h),通量恢复率不低于97%,显示出较强的循环稳定性和优异的抗污性能。 |
| Abstract: |
| In this study, taking advantage of the abundant functional groups (hydroxyl and amino groups) in chitosan (CS) and tannic acid (TA), an active cross-linked layer was constructed on the cellulose acetate membranes via layer-by-layer self-assembly. Further regulated the reaction rates of polyethylene polyamine (PEPA) and 1,3,5-bis(trichloromethyl)benzene (TMC) in interfacial polymerization reaction to stable load polyamide active layer, constructing a high-performance cellulose acetate nanofiltration membranes. The results showed that when the TA solution, CS solution, PEPA solution, and TMC/n-hexane solution mass concentrations were 1.2, 1.2, 5, and 0.5 g/L, respectively, the prepared cellulose acetate nanofiltration membranes (CA-NF-1 membrane) achieved the optimal separation performance, with rejection rates of 85.0%, 93.8%, 92.0% and 88.0% for NaCl, MgCl2, MgSO4, and Na2SO4, respectively, and a water flux higher than 9.3 L/(m²·h), while the rejection rates for methylene blue, congo red, bengal rose, and methyl orange all exceeded 97%. After three cycles of bovine serum albumin contamination and rinsing, the water flux of the CA-NF-1 membrane decreased by only 0.2 L/(m²·h), and the flux recovery ratio reached higher than 97%, demonstrating strong cycle stability and excellent resistance to fouling. |
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