Electrospinning of Biodegradable, Monolithic Membrane with Distinct Bimodal Micron-Sized Fibers and Nanofibers for High Efficiency PMs Removal.
Jian ChenBoyang YuJian ZhuYufei GaoWeiwei DengRouxi ChenHsing-Lin WangPublished in: ACS applied materials & interfaces (2023)
Atmospheric particulate matter (PMs) pollution has raised increasing public concerns, especially with the outbreak of COVID-19. The preparation of high-performance membranes for air filtration is of great significance. Herein, the biosynthetic polymer poly(3-hydroxybutyrate- co -3-hydroxyvalerate) (PHBV) was adopted to create a hierarchical structure and biodegradable nonwoven membrane for PMs filtration through a facile directly electrospinning method. The as-prepared membranes with hierarchical structure contain abundant nanowires (5-100 nm) and microfibers (2-5 μm) with different diameter (1000-5000 nm). We have achieved realization of formation mechanisms of such bimodal micro- and nanofibers, which stem from the branching of microfiber at early stage of electrospinning. The PHBV membranes exhibit a very high PM 0.3 removal efficiency of 99.999% and PM 2.5 removal efficiency of 100% with 0.077% standard atmospheric pressure in the air flow speed of 5.3 cm/s. More importantly, the PHBV membranes can be completely disintegrated within 1 week under composted conditions, indicating the great biodegradability of PHBV membranes. Our work provides insights for the development of biodegradable, high performance air filters for pollutants, molds, bacteria, and viruses.
Keyphrases
- particulate matter
- air pollution
- early stage
- drug delivery
- high efficiency
- coronavirus disease
- photodynamic therapy
- sars cov
- healthcare
- heavy metals
- squamous cell carcinoma
- reduced graphene oxide
- risk assessment
- quantum dots
- mental health
- molecularly imprinted
- tissue engineering
- liquid chromatography
- highly efficient
- adverse drug
- climate change
- study protocol
- light emitting
- sentinel lymph node
- optic nerve