Table 2.

Antibacterial activity and reduction in bacterial concentrations on the surfaces of Petri dishes coated with PCPDTBT, OA, and PCPDTBT/CPN nanocomposite films, and on fabrics before and after washing.

Sample	Bacterium	Ma (CFU/mL) 1	Mb (CFU/mL)	Mc (CFU/mL)	Antibacterial Activity (S)	Reduction of Bacteria (%)
PCPDTBT Film	S. aureus	2.3 × 105	1.1 × 107	5.5 × 104	2.3	99.5
PCPDTBT Film	E. coli	2.3 × 105	1.2 × 107	3.6 × 104	2.5	99.7
OA Film	S. aureus	2.3 × 105	1.1 × 107	<10	6	99.9
OA Film	E. coli	2.3 × 105	1.2 × 107	<10	6.1	99.9
PAN/CPN Film	S. aureus	2.4 × 105	1.2 × 107	<10	6.1	99.9
PAN/CPN Film	E. coli	2.3 × 105	1.3 × 107	<10	6.1	99.9
Fabric, No Wash	S. aureus	1.4 × 105	6.7 × 106	5.4 × 104	2.1	99.2
Fabric, No Wash	K. pneumoniae	1.6 × 105	8.2 × 106	2.1 × 104	2.6	99.7
Fabric, Washed	S. aureus	1.4 × 105	6.7 × 106	1.3 × 104	2.7	99.8
Fabric, Washed	K. pneumoniae	1.6 × 105	8.2 × 106	4.9 × 104	2.2	99.4

¹ Bacterial Concentration (CFU/mL): Numbers of colony-forming units per unit volume.