Bioelectret poly(lactic acid) membranes with simultaneously enhanced physical interception and electrostatic adsorption of airborne PM_0.3

Han Shang¹, Keke Xu², Tian Li¹, Hao-Ran Yang³, Jiefeng Gao⁴, Shihang Li⁵, Jintuo Zhu⁶, Xinjian He⁶, Shenghui Zhang¹, Huan Xu⁷, Baolong Shen⁸

Affiliations

¹ School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
² School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
³ State Laboratory of Surface and Interface Science and Technology, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁴ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁵ Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁶ School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁷ School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China. Electronic address: hihuan@cumt.edu.cn.
⁸ Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China. Electronic address: blshen@seu.edu.cn.

PMID: 37423132
DOI: 10.1016/j.jhazmat.2023.132010

Bioelectret poly(lactic acid) membranes with simultaneously enhanced physical interception and electrostatic adsorption of airborne PM_0.3

Han Shang et al. J Hazard Mater. 2023.

. 2023 Sep 15:458:132010.

doi: 10.1016/j.jhazmat.2023.132010. Epub 2023 Jul 6.

Authors

Han Shang¹, Keke Xu², Tian Li¹, Hao-Ran Yang³, Jiefeng Gao⁴, Shihang Li⁵, Jintuo Zhu⁶, Xinjian He⁶, Shenghui Zhang¹, Huan Xu⁷, Baolong Shen⁸

Affiliations

¹ School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
² School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
³ State Laboratory of Surface and Interface Science and Technology, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁴ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁵ Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁶ School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
⁷ School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China. Electronic address: hihuan@cumt.edu.cn.
⁸ Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China. Electronic address: blshen@seu.edu.cn.

PMID: 37423132
DOI: 10.1016/j.jhazmat.2023.132010

Abstract

Traditional polymeric fibrous membranes have been extensively used to reduce the health risks caused by airborne particulate matter (PM), leading to the dramatically increasing pollution of plastics and microplastics. Although great efforts have been made to develop poly(lactic acid) (PLA)-based membrane filters, they are frequently dwarfed by their relatively poor electret properties and electrostatic adsorptive mechanisms. To resolve this dilemma, a bioelectret approach was proposed in this work, strategically involving the bioinspired adhesion of dielectric hydroxyapatite nanowhiskers as a biodegradable electret to promote the polarization properties of PLA microfibrous membranes. In addition to significant improvements in tensile properties, the incorporation of hydroxyapatite bioelectret (HABE) enabled remarkable increase in the removal efficiencies of ultrafine PM_0.3 in a high-voltage electrostatic field (10 and 25 kV). This was exemplified by the largely increased filtering performance (69.75%, 23.1 Pa) for PLA membranes loaded with 10 wt% HABE at the normal airflow rate (32 L/min) compared to the pristine PLA counterpart (32.89%, 7.2 Pa). Although the filtration efficiency of PM_0.3 for the counterpart dramatically decreased to 21.6% at 85 L/min, the increment was maintained at nearly 196% for the bioelectret PLA, while an ultralow pressure drop (74.5 Pa) and high humidity resistance (RH 80%) were achieved. The unusual property combination were ascribed to the HABE-enabled realization of multiple filtration mechanisms, including the simultaneous enhancement of physical interception and electrostatic adsorption. The significant filtration applications, unattainable with conventional electret membranes, demonstrate the bioelectret PLA as a promising biodegradable platform that allows high filtration properties and humidity resistance.

Keywords: Air filtration mechanisms; Airborne particulate matter; Electrostatic adsorption; Fibrous membranes; Hydroxyapatite bioelectrect; Poly(lactic acid).

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Bioelectret poly(lactic acid) membranes with simultaneously enhanced physical interception and electrostatic adsorption of airborne PM_0.3

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Bioelectret poly(lactic acid) membranes with simultaneously enhanced physical interception and electrostatic adsorption of airborne PM_0.3

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