Comparative Study of the Antimicrobial Effect of Nanocomposites and Composite Based on Poly(butylene adipate-co-terephthalate) Using Cu and Cu/Cu2O Nanoparticles and CuSO4

Table 4 Bacterial colonies count corresponding to four incubation times for each sample of NCs-PBAT/Cu-3%, NCs-PBAT/Cu|Cu₂O 3%, and MCs-PBAT/CuSO₄ 3% and PBAT

Time (h)	Acinetobacter baumanni				Enterococcus faecalis				Streptococcus mutans				Staphylococcus aureus
Time (h)	PBAT	NCs-PBAT/Cu 3%	NCs-PBAT/Cu\|Cu₂O 3%	MCs-PBAT/CuSO₄ 3%	PBAT	NCs-PBAT/Cu 3%	NCs-PBAT/Cu\|Cu₂O 3%	MCs-PBAT/CuSO₄ 3%	PBAT	NCs-PBAT/Cu 3%	NCs-PBAT/Cu\|Cu₂O 3%	MCs-PBAT/CuSO₄ 3%	PBAT	NCs-PBAT/Cu 3%	NCs-PBAT/Cu\|Cu₂O 3%	MCs-PBAT/CuSO₄ 3%
Time I	7 × 10⁵	1 × 10⁶	7 × 10⁵	7 × 10⁵	5 × 10⁴	2 × 10³	0	0	5 × 10³	4x10³	0	0	6 × 10³	0	0	0
Time II	8 × 10⁵	5 × 10⁵	4 × 10⁴	3 × 10³	4 × 10⁴	0	0	0	6 × 10³	0	0	0	8 × 10³	0	0	0
Time III	5 × 10⁵	5 × 10⁵	6 × 10⁶	1 × 10²	5 × 10³	0	0	4 × 10³	4 × 10³	0	0	0	3 × 10³	0	0	0
Time IV	5 × 10⁶	6 × 10⁶	6 × 10⁶	0	5 × 10³	0	4 × 10⁴	5 × 10³	5 × 10³	0	0	0	7 × 10³	0	0	0