Fig. 4.

Schematic illustration of the antibacterial mechanism of AgNPs (a). The absorbance values (b) and inhibition ratio (c) for PCL, PCL-DDP, PCL-AgNPs and PCL-DDP-AgNPs incubated with Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans cultures for 24 h, respectively. CLSM images (sum of stack images and orthogonal views) after staining with the Live/Dead BacLight Bacterial Viability Kit (d). COMSTAT2 was used to analyze the biofilm thickness of Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans on different fiber films (e). *p < 0.05, **p < 0.005, ***p < 0.0005.