Preparation of antibacterial composite fiber membrane for air filtration with micro/nano structure

Preparation of antibacterial composite fiber membrane for air filtration with micro/nano structure

Blog Article

With the aggravation of environmental pollution and the worldwide epidemic of infectious diseases, there is a higher demand for air filtration materials to intercept fine particulate matter and capture biological pollutants.Polypropylene (PP)/polycarbonate (PC) blends were melt blown and electrospun with polytetrafluoroethylene (PTFE) on their surfaces.The PP/PC/PTFE membranes click here structure with micro-nanostructure was constructed through the melt-blown layer with micron structure and the electrospun layer with the nanostructure.

Carboxymethyl chitosan (CMCS) was loaded onto the surface of the PP/PC melt-blown layer.The synergistic effect of micro-nanostructure and CMCS can effectively capture PM2.5 and make the composite membrane have excellent antibacterial performance.

The inhibition rates of PP/PC/PTFE composite membrane loaded with 5% CMCS against Staphylococcus aureus and Escherichia coli reached 81.54% and 86.1%, respectively.

The filtration efficiency of PP/PC/PTFE composite membrane loaded with 5% CMCS is close to 100% for 0.25 μm particles, and the average filtration efficiency for 0.200–4.

596 μm and 0.200–2.500 μm particles is 97.

31% and 97.27%, respectively.After washing and drying five times, the corresponding inhibition rate only lost 16.

52% and 4.24%.The micro/nano structure composite membrane prepared in this study has good antibacterial performance, high filtration efficiency, good stability, color block iphone case and is an excellent antibacterial high efficiency air filter.

It provides a new idea for the preparation of air filter fiber composites.