Preparation of a polyacrylonitrile/polyurethane nanofibrous membrane with antibacterial function and measurement of its air filtration performance

Wu, Yanpeng; YuMing, Lu; Cao, Guoqing

doi:10.1177/1420326x18816353

Cited by 12 publications

(6 citation statements)

References 37 publications

(47 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With comparable filtration efficiency, the quality factor is higher than that of a commercial filter. This investigation shows that improvement of the filtration performance is more effective by adjusting fibre diameter and filing rate than the thickness (Wu et al , 2018).…”

Section: Developments Of Cleanroom Air Filtration Materialsmentioning

confidence: 89%

A critical review on cleanroom filtration

Sikka

Mondal

2021

RJTA

View full text Add to dashboard Cite

Purpose Cleanrooms are highly controlled enclosed rooms where air quality is monitored and ensured to have less contamination according to standard cleanliness level. Air filters are used to optimize indoor air quality and remove air pollutants. Filter media and filtering system are decided as per requirement. Depth filter media are mostly used in cleanroom filtrations. This paper aims to present a comprehensive review of the evolution of cleanroom filter media. It evaluates the advantages and disadvantages of air filter media. It is also studied which air filters have additional properties such as anti-microbial properties, anti-odour properties and chemical absorbent. Development and innovation of air filters and filtration techniques are necessary to improve the performance via the synergistic effect and it can be a possible avenue of future research. Design/methodology/approach This paper aims to drive the future of air filter research and development in achieving high-performance filtration with high filtration efficiency, low operational cost and high durability. Air pollutants are classified into three types: suspended particles, volatile organic pollutants and microorganisms. Technologies involved in purification are filtration, water washing purification, electrostatic precipitation and anion technology. They purify the air by running it through a filter medium that traps dust, hair, pet fur and debris. As air passes through the filter media, they function as a sieve, capturing particles. The fibres in the filter medium provide a winding path for airflow. There are different types of air filters such as the high-efficiency particulate air filter, fibreglass air filter and ultra-low particulate air filter. Findings Emerging filtration technologies and filters such as nanofibres, filters with polytetrafluoroethylene membrane are likely to become prevalent over the coming years globally. The introduction of indoor air filtration with thermal comfort can be a possible avenue of future research along with expanding indoor environment monitoring and improving air quality predictions. New air filters and filtration technologies having better performance with low cost and high durability must be developed which can restrict multiple types of pollutants at the same time. Originality/value The systematic literature review approach used in this paper highlights the emerging trends and issues in cleanroom filtration in a structured and thematic manner, enabling future work to progress as it will continue to develop and evolve.

show abstract

Section: Developments Of Cleanroom Air Filtration Materialsmentioning

confidence: 89%

A critical review on cleanroom filtration

Sikka

Mondal

2021

RJTA

View full text Add to dashboard Cite

show abstract

“…It has stable filtration performance and recyclability and can effectively isolate bacteria and viruses in the air and therefore is one of the ideal materials for new medical masks in the future. Further, PAN is electrospun with metal particles such as silver, , copper, zinc oxide, , and titanium dioxide , to achieve dual-function air filtration materials with efficient inhibition of bacteria and potent filtration efficiency. However, inorganic particles may be shed from the nanofibers, and long-term inhalation of these particles can interfere with the respiratory function. , Therefore, a safer antimicrobial material is needed to go with PAN electrospinning to obtain ideal antibacterial nanofibrous membranes for air filtration.…”

Section: Introductionmentioning

confidence: 99%

Reusable Electrospun Nanofibrous Membranes with Antibacterial Activity for Air Filtration

Wang

Sun

Zhao

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The demand for face masks is increasing exponentially, especially when the coronavirus pandemic and particulate matter (PM) pollution have become serious concerns to public health. However, a lot of pressure is caused by the frequent replacement of traditional masks due to the easy dissipation of electrostatic charge and the accumulation of pathogenic microorganisms. Herein, nanofibrous membranes with efficient inhibition of bacteria, potent air filtration, and reusability performance, consisting of polyacrylonitrile (PAN) nanofibers coated with chitosan quaternary ammonium salt (HACC), were successfully manufactured by simple impregnation method and coaxial electrospinning, respectively. The bactericidal rate of the nanofibrous membranes to the attached bacteria was as high as 99.9% due to the excellent bactericidal activity of the quaternary ammonium groups, which could also be proven by the microscopic appearance of the bacterial cell membrane rupture. The permanent dipole charges provided by PAN nanofibers endowed as-prepared nanofibrous membranes the capability to stably capture PM even when the static electricity disappeared. Moreover, the filtration capacity of nanofibrous membranes could still be close to the initial value after a simple washing, which was even unattainable by commercial filters. These nanofibrous membranes are expected to replace traditional disposable filters to achieve long-life and reusability expectations.

show abstract

“…To improve the IAQ and protect people from its effects, three basic concentration control strategies, 6 i.e. contaminant source control, ventilation 7,8 improvement and air cleaning, are often applied. To reduce individual contaminants at the source, contaminant source control is the most effective strategy.…”

Section: Introductionmentioning

confidence: 99%

Dynamic forecasting model for indoor pollutant concentration using recurrent neural network

et al. 2020

Indoor and Built Environment

View full text Add to dashboard Cite

Accurate and reliable indoor pollutant concentration prediction is essential to solve the time-lag problem of indoor air quality control systems. Thus, the representation of time in pollutant forecasting models is very important. One approach is to introduce an Elman neural network using a direct inference strategy into the time series forecast of indoor pollutant concentration. In this study, measurements of CO2 (ppm), total volatile organic compounds (mg/m3), particulate matter with a diameter smaller than 2.5 µm (PM2.5; µg/m3), the indoor dry bulb temperature (°C) and relative humidity (%) were carried out in a classroom at a middle school in Beijing, China. To identify air pollution antecedents, input selection was conducted based on correlation analysis. The results show that the information provided by the PM2.5 time series can better simulate the dynamic relationship between input and output data ([Formula: see text]= 0.963 and R2 = 0.928). In addition to the overall goodness of fit ([Formula: see text] = 0.982) of the CO2 time series, the peak and valley prediction capability of the model was evaluated using the relative peak error ( RPE) metric. Information from the valleys of the CO2 time series gives good results ([Formula: see text]). Therefore, a dynamic forecasting model with a direct inference strategy is a capable tool for identifying proper air pollution antecedents.

show abstract

Preparation of a polyacrylonitrile/polyurethane nanofibrous membrane with antibacterial function and measurement of its air filtration performance

Cited by 12 publications

References 37 publications

A critical review on cleanroom filtration

A critical review on cleanroom filtration

Reusable Electrospun Nanofibrous Membranes with Antibacterial Activity for Air Filtration

Dynamic forecasting model for indoor pollutant concentration using recurrent neural network

Contact Info

Product

Resources

About