Reactive Dyes and Nano-Silver on PA6 Micro Knitted Goods

The goal of our research was to obtain uniformly dyed PA6 micro knitted goods with excellent wet fastness, good UPF, and antibacterial properties. Newly developed reactive dyes and 80 nm silver particles were used. The AATCC-Test method 183 was used for the calculation of UPF of PA6 micro knitting. ICP-AES analysis was used for the determination of silver. Antibacterial activity of nano-silver on PA6 knitted goods was determined according to ASTM Designation E 2149-01. The research showed uniformly dyed PA6 micro knitting with excellent wet fastness. Dyed PA6 micro reached a UPF range between 15 and 24. ICP-AES showed high absorbance of silver. PA6 micro knittings treated with 80 nm nano-silver have high antimicrobial effectiveness against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, but after 10 washings the property is lost. Changes of color were observed on dyed PA6 micro knitting treated with nano-silver.