Activity of Antimicrobial Silver Polystyrene Nanocomposites
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
