Design and antibacterial application of silver phthalocyanine-silver modified silicate immobilized on fabric

Abstract Organic–inorganic composite antibacterial materials based on silver phthalocyanine-silver (AgPc/Ag) and aminosilane-modified silicate (Ormosil) were synthesized by sol-gel method and in-situ reduction method. The objective of this study was not only the synthesis of Pc-Ormosil and AgPc-Ormosil/Ag composites but also investigated the bacteriostatic ability of the Pc-Ormosil and AgPc-Ormosil/Ag modified fabrics and the relationship between the antibacterial property and the content of composites on non-woven fabric was discussed. Moreover, the laundering durability of the bacteriostatic of the AgPc-Ormosil/Ag-treated fabrics was also examined. The bacteriostatic ability of the Pc-Ormosil and AgPc-Ormosil/Ag modified fabrics against Gram-negative Pseudomonas aeruginosa, Escherichia coli and Gram-positive Staphylococcus aureus, Bacillus subtilis were confirmed by the zone of inhibition and the plate-counting method. The bacteriostatic ability remains even after one laundry cycle.