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Facile method to fabricate robust homogeneous braid-reinforced cellulose acetate hollow fiber membranes with enhanced physiochemical properties

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Abstract

Cellulose acetate (CA) membrane is usually utilized in wastewater treatment and biomedical process due to its good biocompatibility and easy processing but low flux and poor anti-fouling. The hydrophilicity and anti-fouling property of membrane could be improved through the doping of functional nanoparticles. Herein, the robust homogeneous braid reinforced (HBR) CA hollow fiber membranes with GO-doping were fabricated by the continuous skin–core spinning method. The content of GO exhibited noticeable effects on the structure and property of HBR CA hollow fiber membranes. On the one hand, the neatly arranged finger-like pore structure and good permeability could be designed. On the other hand, the high protein rejection and anti-fouling property were obtained. For example, the pure water flux and BSA rejection were improved from 115.7 L m−2 h−1 to 201.4 L m−2 h−1, 97.2% to 99.5% respectively. The optimal GO content was 0.1 wt% according to the assessment of flux decline coefficient, flux recovery rate and BSA rejection. Moreover, the HBR structure provided favorable interface bonding strength and excellent mechanical strength, which was suitable for the high pressure backwash and aeration process in filtration system. In a word, the HBR CA hollow fiber membrane with good hydrophilicity and anti-fouling property showed potential applications for wastewater treatment and biomedical process.

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Funding

The authors gratefully acknowledge the research funding provided by the National Natural Science Foundation of China (52103035, 52173038), and Class III Peak Discipline of Shanghai-Materials Science and Engineering (High-Energy Beam Intelligent Processing and Green Manufacturing).

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WZ and XJ wrote the main manuscript text, and HL and ZF suggested that the test metohd of hollow fiber membrane. KC and CX offered the funding and helped perform the analysis with constructive discussions. All authors reviewed the manuscript.

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Correspondence to Xin Jin or Kaikai Chen.

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Zhao, W., Jin, X., Chen, K. et al. Facile method to fabricate robust homogeneous braid-reinforced cellulose acetate hollow fiber membranes with enhanced physiochemical properties. Cellulose 31, 395–410 (2024). https://doi.org/10.1007/s10570-023-05629-3

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  • DOI: https://doi.org/10.1007/s10570-023-05629-3

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