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Nanoparticle-enhanced bamboo-like tubular nanofibers for active capture of particulate matter

Wu, G; Luo, J; Zhao, L; Liang, H; Liu, C; Tan, H; Li, W; (2019) Nanoparticle-enhanced bamboo-like tubular nanofibers for active capture of particulate matter. Journal of Polymer Science, Part A: Polymer Chemistry , 57 (11) pp. 1216-1223. 10.1002/pola.29378. Green open access

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Abstract

We proposed a thought of active capture of particles by improving the interaction force between fibers and particles. Nanoparticle-enhanced tubular nanofibers (Ag-SPNTs) were prepared by template-free cationic polymerization followed by surface modification. Ag-SPNTs have coarse surface and bamboo-like tubular structure with a diameter of approximately 80-150 nm. Ag nanoparticles were embedded on the nanofibers surface, and the content of Ag nanoparticles in the nanofibers could be tuned by changing the concentration of [Ag(NH 3 ) 2 ] + in the preparation process. f-d curve measured by AFM showed that increasing the content of Ag nanoparticles in the nanofibers resulted in the enhanced interaction force between the nanofiber surface and particles. Particle matter capture test showed that the number of captured microscaled/naonoscaled particles on the fiber surface increased obviously for the nanoparticle-enhanced tubular nanofibers (Ag-SPNTs) compared to the nanofibers without nanoparticle (SPNTs), probably due to the increased interaction force and adhesion energy between fiber surface and particles. Filtration property test showed that the Ag-SPNTs fiber films had a better filtration performance with a higher filter efficiency and QF value than that of SPNTs.

Type: Article
Title: Nanoparticle-enhanced bamboo-like tubular nanofibers for active capture of particulate matter
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/pola.29378
Publisher version: https://doi.org/10.1002/pola.29378
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Air filtration, interaction forces, particulate capture, tubular nanofibers
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci > Department of Ortho and MSK Science
URI: https://discovery.ucl.ac.uk/id/eprint/10073161
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