表面荷正电玻纤滤材的制备及其对水中纳米塑料过滤性能研究  

Research on Preparation of Positively Surface-charged Glass Fiber Filter Materials and Their Filtration Performance for Nanoplastics in Water

作　　者：陈彦霖 杨栋 徐桂龙 唐敏[1,2] 梁云 CHEN Yanlin;YANG Dong;XU Guilong;TANG Min;LIANG Yun(School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640;Guangdong South China University of Technology Paper Engineering Research Center Co.,Ltd.,Guangzhou,Guangdong Province,510640;Henan Hejing Cleaning Technology Co.,Ltd.,Zhengzhou,He’nan Province,450001)

机构地区：[1]华南理工大学轻工科学与工程学院,广东广州510640 [2]广东华南理工大学造纸工程研究中心有限公司,广东广州510640 [3]河南核净洁净技术有限公司,河南郑州450001

出　　处：《中国造纸》2025年第3期28-33,共6页China Pulp & Paper

基　　金：中央高校基本科研业务费专项资金(2024ZYGXZR002);广西省重点研发计划(桂科AB22080005)。

摘　　要：本研究通过合成具有反应活性的季铵化聚乙烯亚胺(GPEI),并应用于玻纤滤材增强改性,获得表面荷正电的玻纤滤材并应用于水中纳米塑料的过滤。采用傅里叶变换红外光谱仪分析GPEI的化学结构,研究了GPEI上胶量和季铵化试剂用量对改性后玻纤滤材的物理性能和水中纳米塑料过滤性能的影响,探究了改性玻纤滤材过滤性能的持久稳定性。结果表明,当KH560∶PEI∶GTMAC物质的量比为6∶1∶1、GPEI上胶量为6.0%时,改性后表面荷正电玻纤滤材综合性能最佳,其抗张强度为0.789 kN/m,表面Zeta电位为+55.7 mV,对300 nm聚苯乙烯乳胶球颗粒物的过滤效率达97.3%,过滤阻力仅为6.2 kPa,在水中浸泡30天后,过滤效率仍能保持95.2%,具有良好的持久稳定性。In this study,reactive quaternized polyethyleneimine(GPEI)was synthesized and applied for the enhanced modification of glass fiber filter paper,resulting in positively charged glass fiber filter materials that were used for filtering nanoplastics in water.Fourier-trans-form infrared spectroscopy was employed to analyze the chemical structure of GPEI.The effects of GPEI coating amount and quaternization reagent dosage on the physical properties of the modified glass fiber filter materials and its filtration performance for nanoplastics in water were studied,the filtration durability of the positively charged glass fiber filter materials was also studied.The results showed that when the molar ratio of KH560∶PEI∶GTMAC was 6∶1∶1 and the GPEI coating amount was 6.0%,the modified positively surface-charged glass fiber filter materials exhibited optimal overall performance with a tensile strength of 0.789 kN/m,surface Zeta potential of+55.7 mV,filtration efficiency of 97.3%for 300 nm polystyrene latex particles,and filtration resistance of only 6.2 kPa.After 30 days of immersion in water,the filtration efficiency remained at 95.2%,demonstrating excellent filtration durability.

关 键 词：玻纤滤材 荷正电 纳米塑料 过滤效率 稳定性 

分 类 号：TS767[轻工技术与工程—制浆造纸工程]