Structure And Property Of Cotton Modified With Nano-silver With In-situ Menthod

In order to achieve the anti-bacterial property of cotton fabric, a solution which was mixed by multi-amidine compound (RSD) and silver nitrate was used to deal with the cotton fabric. The steam method in light of in-situ mechanism was selected to obtain the nano-silver antibacterial cotton fabric. The influencing factors were discussed, then dyeing properties, anti-bacterial properties, dyeing properties a wearability were researched.The result indicated that the optimized technics were:dipping 40min than steaming30min.The amount of reducing agent is 2g/L, the amount of AgNO3 is 0.34g/L. The antibacterial efficiency of the treated fabric depends on the number of the Nano-silver deposited. The higher the number is, the more antibacterial efficiency the fabric obtained.The silver-treated cotton fabric showed 99.69% bacterial reduction of Escherichia coli and 99.79% bacterial reduction of Staphylococcus aureus while the silver content on cotton was about 137mg/kg. The antimicrobial activity of the silver-treated cotton fabric was maintained at over 99% reduction level even after being exposed to 20 consecutive home laundering conditions。So the steam method in light of in-situ mechanism to obtain the nano-silver antibacterial cotton fabric can get high antibacterial efficiency and washing fastness.The finished fabric still have good dyeing ability and for many kinds of activity of the dyeing.Compared with non-finished,the color light of the finished fabtic changed little.The wearability also has little change.