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Research on Preparation of Positively Surface-charged Glass Fiber Filter Materials and Their Filtration Performance for Nanoplastics in Water
Received:September 23, 2024  
DOI：10.11980/j.issn.0254-508X.2025.03.004
Key Words:glass fiber filter materials  positively charged  nanoplastics  filtration efficiency  durability
Fund Project: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）。
Author NameAffiliationPostcode
CHEN Yanlin School of Light Industry and Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640 510640
YANG Dong Henan Hejing Cleaning Technology Co.， Ltd.， Zhengzhou， He’ nan Province， 450001 450001
XU Guilong* 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 		510640
TANG Min 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 		510640
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 		510640
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Abstract: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-transform 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.
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