One Step Photopolymerization of N, N-Methylene Diacrylamide and Photocuring of Carboxymethyl Starch-Silver Nanoparticles onto Cotton Fabrics for Durable Antibacterial Finishing

Table 2

Effect of MDA concentration on the inhibition zone (mm) of S. aureus and E. coli. Synthesis conditions: DS = 0.2; [CMS], 10 g/L; [PI], 1 g/L; [AgNO₃], 1 g/L; temperature, 40°C; time, 60 min; M : L ratio, 1 : 20; pH, 7. Finishing conditions: pad-dry-photocure, AgNPs colloidal solution, and [MDA], 5, 10, and 15 g/L. Curing conditions: drying for 5 min at 100°C; UV curing for 60 min. Washing conditions: Egyptol, 2 g/L; fabric : liquor ratio, 1 : 10; temperature, 50°C for 10 min.

[MDA] (g/L)	Number of washing cycles	Inhibition zone (mm)
		S. aureus	E. coli
0	0	21	20
5	0	21	21
10	0	23	23
15	0	24	23
0	1	20	20
5	1	20	18
10	1	22	19
15	1	24	22
0	3	14	14
5	3	7	8
10	3	14	13
15	3	15	14
0	5	0	0
5	5	0	0
10	5	4	3
15	5	4	2
0	7	0.5	0
5	7	0	0
10	7	1.0	0.5
15	7	4.0	3.0
0	10	0	0
5	10	0	0
10	10	0	0
15	10	0	0
0	15	0	0
5	15	0	0
10	15	0	0
15	15	0	0
0	20	0	0
5	20	0	0
10	20	0	0
15	20	0	0