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 film0.8551. 0031.205
(B) +10 wt.% Ag/PS film 1 cm × 1 cm 0,0150 mg0.7740.8980.939
(C) +30 wt.% Ag/PS film 1 cm × 1 cm 0,0177 mg
drastic annealing
0.6870.815 (* )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 powder0.591 (* )0.722 (* )0.891 (* )
(F) +0.007 mg pure Ag powder0.656 (* )0.890 1.056