膜科学与技术

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Preparation and ultrafiltration performance of HNTs/PAN hybrid membrane modified by D-amino acid

Authors： Zang Peng, Liu Qiao, Fan Long, Xu Nong*, Dong Qiang*, Ding Aiqin

Units： School of Energy, Materials and Chemical Engineering, Hefei University, Hefei, 230601

KeyWords： Polyacrylonitrile (PAN), hybrid membrane, Halloysite Nanotubes (HNTs), D-amino acid (DAA) , Composite (HNTs-dopamine-D-amino acid, HDD)

ClassificationCode：TQ325.8

year,volume(issue):pagination： 2021,41(4):73-83

Abstract：

A composite was prepared by dopamine adhering D-amino acid to the outer surface of Halloysite Nanotubes (HNTs). The composite (HNTs-dopamine-D-amino acid, HDD) was added in situ by the method of non-solvent induced phase separation (NIPS) with Polyacrylonitrile (PAN) as the matrix. The effects of HDD on the micromorphology, hydrophilic property, chemical structure and filtration performance of the HDD/PAN hybrid membrane were investigated by XRD, TEM, SEM, AFM and FTIR etc. The results showed that DAA was grafted on the surface of HNTs due to the adhesion of polydopamine. The D-amino acid (DAA) promoted dispersion of the HDD in the PAN matrix, increased surface roughness and vertical finger-like holes in the membrane. The additive (HDD) improved the hydrophilic property and anti-fouling performance of the hybrid membrane. It was found that with HDD content of 5 wt% the membrane exhibited the lowest contact angle, the maximum pure water flux of 1334.21L/(m2·h), the BSA solution flux of 61.29 L/( m2·h) and the BSA rejection as high as 97.71%.

Funds：

安徽省教育厅重点项目（KJ2020A0669）；安徽省重点研究和开发计划项目（201904a05020077）；合肥学院人才基金（18-19RC15, 18-19RC16, 18-19RC19）

AuthorIntro：

臧鹏（1997-），男，江苏宿迁人，硕士生，研究方向为膜材料科学与技术，E-mail：1370384303@qq.com

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