Anti-bacterial composition and method for producing the same
The invention discloses an anti-bacterial composition and method for producing the same. The anti-bacterial composition of the invention includes an organic siloxane material which comprises an amino group, and a plurality of silver atoms. Particularly, the organic siloxane material has a meshed structure, and the plurality of silver atoms are bonded to the amino group and are well dispersed in the meshed structure.
1. A method of manufacturing an anti-bacterial composition, said method comprising the steps of:
(a) mixing tetraethyl orthosilicate with aminosilane, stirring the mixture in nitrogen to form an organic siloxane material comprising an amino group, and the organic siloxane material having a meshed structure;
(b) dissolving silver salts in ammonium hydroxide and adding the dissolved silver salts into the organic siloxane material to dissociate silver ions from the silver salts; and
(c) adding hydrazine into the mixture of step (b), stirring the mixture in nitrogen to reduce the silver ions to form silver atoms, so that the silver atoms are well dispersed in the meshed structure of the organic siloxane material to obtain the anti-bacterial composition.
2. The method of claim 1 , wherein the molar concentration ratio of the tetraethyl orthosilicate and the aminosilane is 1:1.
3. The method of claim 1 , wherein the aminosilane is 3-(2-aminoethylaminopropyl)trimethoxysilane (AES) or N-[3-(trimethoxysilyl)propyl]diethylenetriamine (ATS).
4. The method of claim 1 , wherein the silver salts are silver nitrate.