Hybrid nanofiber membranes of poly(ethylene terephthalate) and chitosan (PET/CTS) were prepared by electrospinning technology. Moreover

adsorbing a layer of nanosilver on the fiber membrane was used to further increase the antibacterial properties of fiber membranes. The surface morphology of membranes with the different ratios of PET/CTS was characterized by scanning electron microscopy (SEM)

and the results showed that 12. 5% is the best ratio and the average diameter of nanofiber was 405 nm. Besides

the influences of membrane thinkness on mechanical properties

air permeability and air filtration performance were studied. Results reveal that when the spinning time is 7 h

the fiber membrane has good performance

and its elastic modulus is 48. 15 MPa

elongation at break is 183. 30%

tensile stress is 2. 11 MPa

tensile strength is 2. 49 MPa

the tensile yield stress is 1. 23 MPa

the maximum force is 1. 38 N

the air resistance value is 3. 99 kPa S/m

the filtration efficiency is 99. 55% and the pressure drop is 621. 32 Pa

respectively. In addition

the result of crosslinking experiment indicates that the best proportion is GA(vol%)=3. 5%. Finally

UV visible spectroscopy (UV) and transmission electron microscopy (TEM) characterization reveals that the size of nanosilver is above 10 nm and the antimicrobial test shows that the antibacterial ratio for s. a. and E. coli. can reach 99. 97% and 99. 99%

respectively.