Abstract

There is provided a method for preparing a natural cellulose-AgO matrix having antimicrobial activity without leaching silver from the cellulose-AgO matrix. The method comprises: introducing silver ions (Ag+) into a natural cellulose matrix by dipping the natural cellulose matrix in an AgCl-dissolved NH4OH solution; and substituting hydrogen (H) of hydroxyl group (-OH) in natural cellulose with Ag+ by drying the silver ion-infused natural cellulose matrix, thus to form a natural cotton-AgO complex. The cellulose-AgO matrix prepared in the method may be useful to continuously maintain antimicrobial activity by maintaining an effective concentration of silver, which does not have cytotoxicity to human skin, and chemically bonded silver is not leached during the rehydration due to the chemical bond between the silver and the cellulose matrix.

IPC Classes  ?

• D06M 11/42 - Oxides or hydroxides of copper, silver or gold
• D06M 14/04 - Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
• D06M 11/36 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxidesTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with salts derived from anions with an amphoteric element-oxygen bond
• D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonylsReduction of metal compounds on textiles