The chloromethylated crosslinked polystyrene with chlorine content of 3.9, 3.7 and 2.7 mmol/g were prepared by chloromethylating crosslinked polystyrene with crosslinkage of 2%, 4% and 5% respectively. The insoluble q...The chloromethylated crosslinked polystyrene with chlorine content of 3.9, 3.7 and 2.7 mmol/g were prepared by chloromethylating crosslinked polystyrene with crosslinkage of 2%, 4% and 5% respectively. The insoluble quaternary ammonium bactericides with quaternary ammonium content of 2.6, 2.5 and 2.2 mmol/g quaterisated resin were prepared by treating the chloromethylated polystyrene with dimethyldodecyl ammonium. It is found that the more crosslinkages in chloromethylated polystyrene, the smaller the pore volume, the less the chlorine content, then the less the ammonium amount in resin and the less antibactericidal activity of the polymer bactericides.展开更多
The insoluble quaternary ammonium bactericide was synthesized in two steps using silica gel as a carrier. The silica gels first reacted with 3-chloropropyltrimethoxysilane to give an intermediate, the chloropropyl gro...The insoluble quaternary ammonium bactericide was synthesized in two steps using silica gel as a carrier. The silica gels first reacted with 3-chloropropyltrimethoxysilane to give an intermediate, the chloropropyl groups on which then reacted with dimethyl tetradceylamine to give the quaternary ammonium bactericides. The bactericidal rate of the product against heterotrophic bacteria was 99% as tested in vitro.展开更多
文摘The chloromethylated crosslinked polystyrene with chlorine content of 3.9, 3.7 and 2.7 mmol/g were prepared by chloromethylating crosslinked polystyrene with crosslinkage of 2%, 4% and 5% respectively. The insoluble quaternary ammonium bactericides with quaternary ammonium content of 2.6, 2.5 and 2.2 mmol/g quaterisated resin were prepared by treating the chloromethylated polystyrene with dimethyldodecyl ammonium. It is found that the more crosslinkages in chloromethylated polystyrene, the smaller the pore volume, the less the chlorine content, then the less the ammonium amount in resin and the less antibactericidal activity of the polymer bactericides.
文摘The insoluble quaternary ammonium bactericide was synthesized in two steps using silica gel as a carrier. The silica gels first reacted with 3-chloropropyltrimethoxysilane to give an intermediate, the chloropropyl groups on which then reacted with dimethyl tetradceylamine to give the quaternary ammonium bactericides. The bactericidal rate of the product against heterotrophic bacteria was 99% as tested in vitro.
