Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 582, Issue -, Pages 506-514Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.08.075
Keywords
Sodium lignosulfonate; Electrospinning nanofibre membrane; Green; Air filtration; Pressure drop
Categories
Funding
- National Natural Science Foundation of China [21774060]
- National Key R&D Program of China [2017YFF0207804]
- Jiangsu Key Lab of Biomass-based Energy and Materials [JSBEM2016011]
- State Key Laboratory for Mechanical Behavior of Materials [20171914]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
- Natural Science Key Project of the Jiangsu Higher Education Institutions [16KJA220006]
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This study introduces a new effective air filtration membrane prepared from PVA-LS composite nanofibers for outdoor protection. The addition of LS enhances PM2.5 removal efficiency, with excellent filtration performance and mechanical properties, as well as transparency.
Air particulate pollution from ever-increasing industrialization poses an enormous threat to public health. Thus, the development of a green air filter with high efficiency and performance is of urgent necessity. In this study, we introduce a new effective air filtration membrane that can be used for outdoor protection. The air filter's composite nanofibre materials were prepared from polyvinyl alcohol (PVA)-sodium lignosulfonate (LS) via a green electrospinning method and thermal crosslinking. The addition of LS helped increase the PM2.5 removal efficiency compared to that of a pure PVA nanofibre membrane. The pressure drops of the electrospun PVA-LS membranes exceeded those of the pristine PVA air filter. The remarkable air filtration performance was maintained even after 10 cycles of circulation filtration. In addition, the PVA-LS composite nanofibre membrane exhibited excellent mechanical properties and transparency due to the introduction of LS. This study provides new insight into the design and development of high-performance and high-visibility green filter media, which include personal protection and building screens. (C) 2020 Elsevier Inc. All rights reserved.
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