preparation of antibacterial polymer-grafted nano-sized silica and surface properties of silicone rubber filled with the silica

by:Keyuan     2020-07-19
Graft the antibacterial polymer onto the nano-material.
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.
Proportional gatheringSt-SO3−Na+)
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.
Graft polymerizationSt-SO3−P+Bu3R)
The surface of silica was confirmed by infrared spectrum. The poly(St-SO3−P+Bu3R)-
Grafted silica in acetone and poly (
Px).
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.
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