This research deals with the bacteriostasis and the skin-innoxiousness of a nanosize silver colloidal solution used as an agent for the antibacterial treatment of textile fabrics. We placed nanosize silver colloidal solutions and the textile fabrics treated with the same solutions on germ-containing agar plates, respectively, and calculated the bacterial reduction after certain contact times to evaluate the antibacterial efficacy of nanosilver in colloidal solutions and textile fabrics. The antibacterial treatment of textile fabrics was easily achieved by using nanosize silver colloidal solution. The result of skin-irritation testing of a nanosilver colloidal solution showed the skin-innoxiousness of nanosilver to animals. The TEM observation of silver nanoparticles showed their shape and size distribution. The SEM image of the treated fabric indicated silver nanoparticles were well dispersed on the fabric surface.

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This research deals with the antibacterial efficacy of a nanosized silver colloidal solution and its application to nonwoven fabrics. The nutrient solution including the nanosized silver colloidal solution or the nanosilver treated nonwovens are placed on germ containing agar plates and inoculated with gram-positive and gram-negative bacteria and evaluated for bacteriostasis and calculated bacterial reduction, respectively. Nanosized silver colloids and nanosilver treated nonwovens have good bacteriostasis. TEM observa tions of silver nanoparticles show their shape and size distribution. SEM images of treated fabrics indicate silver nanoparticles are well dispersed on the surfaces of specimens. Antibacterial treatment of nonwoven fabrics is easily achieved by the nanaosized silver colloidal solution.