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Fabrication and characterizations of electrospun cellulose/CeO2 nanocomposite membranes

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Abstract

Nanocomposite membranes based on electrospun-cellulose (EC) composites combined with cerium oxide (CeO2) nanoparticles (NPs) were fabricated by electrospinning using cellulose acetate (CA) as a precursor. CeO2 NPs were initially synthesized via cellulose nitrate template. After removing the template and any residual by calcination at 500 °C, the nanocubic CeO2 NPs were obtained with average sizes of 20.40 ± 3.8 nm and then incorporated into cellulose nanofibers (CNFs) by mixing with CA solution. Subsequently, the obtained CA/CeO2 nanocomposite membrane was formed via the electrospinning and then converted to the EC/CeO2 nanocomposite membrane by being treated with a NaOH ethanolic solution. FTIR analysis confirmed the stepwise conversion of the acetyl group in CA structure to the hydroxyl groups of cellulose. The fabricated nanocomposite membranes characterized via FE-SEM and AFM, evaluating that the addition of CeO2 NPs incorporated into the fabricated CNFs resulted in changing their average fiber diameter without the exfoliation of CeO2 NPs. The average fiber diameter of the EC and EC/CeO2 nanocomposite membranes with 0.5, 1.0, and 1.5 wt% CeO2 contents was estimated to be 206 ± 66, 189 ± 47, 178 ± 52, and 147 ± 108 nm, respectively. However, it was observed that, at 1.5 wt% of CeO2 NP contents, the bead-like formation appeared, leading to enhancement of water uptake capacities up to 260.11 ± 15.93%, meanwhile the EC membrane exhibited the water uptake capacities of 203.77 ± 11.11%. In addition, the antibacterial activity of EC nanocomposite membranes was conducted against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). The results indicated that incorporating CeO2 NPs into the CNF matrix via electrospinning does not exhibit the distinct antibacterial activities of EC. The effect of the CeO2 NPs incorporated in EC nanocomposite membranes was further discussed.

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All data generated or analyzed during this study are included in this published article and its supplementary information files.

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Acknowledgments

The authors gratefully acknowledge the generous support and contributions from esteemed institutions, including SPC (THAILAND) CO., LTD., Nitro Chemical Industry Co., Ltd., and RCI Labscan Co., Ltd. Their financial backing and provision of essential chemical reagents were instrumental in the successful completion of this manuscript. Their invaluable support has significantly enriched the quality and scope of our research.

Funding

This research has received funding support from the NSRF via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (PMU-B) [Grant number B13F660053].

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The manuscript was written through the contributions of all authors. All authors have given approval to the final version of the manuscript. Conceptualization: Vissanu Meeyoo, Methodology, Investigation (experimental work): Aeakartit Boonprasertpoh and Prin Chantarangkul; Writing original draft: Aeakartit Boonprasertpoh and Satita Thiangtham, Writing review and editing: Boonyarach Kitiyanan, Pirom Noisumdaeng, Jatuphorn Wootthikanokkhan and Vissanu Meeyoo, Supervision: Vissanu Meeyoo.

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Correspondence to Vissanu Meeyoo.

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The authors have no relevant financial or non-financial interests to disclose, and this manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the submission is an original work and is not currently under review by other publications elsewhere.

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Boonprasertpoh, A., Chantarangkul, P., Thiangtham, S. et al. Fabrication and characterizations of electrospun cellulose/CeO2 nanocomposite membranes. Cellulose 31, 2957–2973 (2024). https://doi.org/10.1007/s10570-024-05788-x

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  • DOI: https://doi.org/10.1007/s10570-024-05788-x

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