Study On Antimicrobial Activity And Safety Of Nano - Silver Fiber

With the improvement of people’s living standard, peoples pay more attentions to products closely related to their health, such as antimicrobial fabrics. Most textile fabrics used in hospital and public health fields etc. are easy to cause bacterial infection. Therefore, the use of antibacterial fabrics is necessary. It can meet people’s need for health and environmental protection.This paper first studies the physical properties of nano-silver fibers and nylon performance by contrast, clearly highlights the fundamental properties of nano-silver fibers; nano-silver fibers with different proportions of modal fiber blended yarn tested the performance of different proportions; By knitting yarn woven into the knitted fabric, easy to study antibacterial and security.Antibacterial test uses the ratio of silver ion with a different modal fibers blended knitted fabric, the ratio was 3%, 4%, 5%, 6%, 7%. Methods of qualitative and quantitative agar diffusion method of shock method, using E. coli bacteria.Safety tests using rabbit skin irritation test and guinea pig skin allergy test. By sticking to the sample surface of the skin of rabbits, observing the sample case of rabbit skin irritation; by sticking to the sample surface and induced guinea pig skin allergy was observed in guinea pigs allergies; in order to launch the security of the sample.Final results of the samples showed that: Because this nano-silver fibers are nylon for the substrate, by testing the physical and mechanical properties of such nano-silver fibers, nylon fibers found and similar physical and mechanical properties; this nano-silver fiber has antibacterial properties, and antibacterial effect due to different proportions and different; when the fabric of nano silver fiber content of 3%, the antimicrobial rate has ≥70%, in accordance with national standards that have been met with antibacterial properties; when the fabric of nano silver content of 3%-5% When, with the nano-silver antibacterial rate increase the percentage has improved significantly, but at 5%-7%, to increase the percentage of nano-silver antibacterial rate increase is not obvious, and therefore infer that when nano-silver fiber content of 5%, the optimal proportion can guide the industrial production, reduce costs; selected sample of 4%, 5%, 6%, were rabbit skin irritation test and guinea pig skin allergy test were found to stimulate reactions and allergies.