Table 1: Time-dependent antiseptic evaluation of Ag/PS films. Spectrophotometric lecture of the optical density (O.D.) in E. coli culture shows significant (*) antibacterial effect after 24 h and 48 h of incubation with Ag/PS films, both at mild and drastic annealing, compared to blank.

Samples (E. coli culture) 16 h O.D. 24 h O.D. 48 h O.D. (A) Blank, without Ag/PS film 0.855 1. 003 1.205 (B) +10 wt.% Ag/PS film 1 cm × 1 cm 0,0150 mg 0.774 0.898 0.939 (C) +30 wt.% Ag/PS film 1 cm × 1 cm 0,0177 mg drastic annealing 0.687 0.815 (*) 0.742 (**) (D) +30 wt.% Ag/PS film 1 cm × 1 cm 0,0177 mg mild annealing 0.786 0.822 (*) 0.862 (*) (E) +0.009 mg pure Ag powder 0.591 (*) 0.722 (*) 0.891 (*) (F) +0.007 mg pure Ag powder 0.656 (*) 0.890 1.056