preparation of antibacterial polymer-grafted nano-sized silica and surface properties of silicone rubber filled with the silica
The size and surface properties of silicone rubber filled with silica were studied.
Grafting of antibacterial polymer by two methods
The steps are as follows. Poly(p-
Sodium Ding benzene)(poly(St-SO3−Na+))
Successfully grafted to Nano
Determination of size of silica surface by Free Radical Polymerization of St-
So3na caused by a system composed of three chlorine ethyl groups and Mo on the silicon surface (CO)
6: introduce tricloethyl acid base to the surface of silica gel through the reaction of amino group with tricloethyl acid.
With the progress of polymerization, the amount of grafting increased to about 30%. The poly(St-SO3−Na+)-
With diammonium tridinyl phosphate (Bu3RP+Cl−)
Convert the so3-na base into vinyl phosphon salt and so3-p the Bu3R base.
The surface of silica was confirmed by infrared spectrum. The poly(St-SO3−P+Bu3R)-
Grafted silica in acetone and poly (
It was found that silicone-filled polySt-SO3−P+Bu3R)-
Grafted silica gel has strong antibacterial activity.
The surface of silicone rubber has the ability to inhibit the reproduction of S. aureus and E. coli.