3results about How to "Effective antibacterial" patented technology

This invention discloses a near-infrared light-exciteable composite nanosheet, its preparation method, and its applications, belonging to the field of biomedical technology. The method includes the following steps: mixing epigallocatechin gallate with a Ti3C2 nanosheet dispersion, ultrasonically reacting, adding silver salt, and continuing stirring in the dark; after the reaction is complete, washing and separating to obtain MXene-EGCG@Ag composite nanosheets. The composite nanosheets provided by this invention possess near-infrared light-exciteable properties and can be used to prepare medically acceptable dosage forms such as hydrogels for the treatment of periodontitis. The preparation method provided by this invention is simple, the raw materials are readily available, and it exhibits significant antibacterial and anti-inflammatory effects, enabling further widespread application.

This invention relates to a polyester with antibacterial and antiviral functions, its preparation method, and its application. The polyester with antibacterial and antiviral functions is a cationic polymer guanidine salt-supported antibacterial and antiviral polyester. The preparation method includes the following steps: modifying the cationic polymer guanidine salt with a compound containing multiple functional groups to obtain a reactive antibacterial and antiviral adjuvant; during the polymerization of the polyester, adding the reactive antibacterial and antiviral adjuvant, terephthalic acid, diol, and catalyst in a single batch to a polyester reactor to obtain an antibacterial and antiviral random copolyester; or, copolymerizing the reactive antibacterial and antiviral adjuvant with diethyl terephthalate (BHET) to obtain an antibacterial and antiviral copolyester. Compared with the prior art, the polyester obtained by this invention exhibits no dissolution of the antibacterial and antiviral components, uniform dispersion, excellent durability, and good color value in the resulting fiber product.

This invention discloses an injectable hydrogel for photothermal-assisted treatment of periodontitis and its preparation method, belonging to the field of polymer material preparation technology. The preparation method includes the following steps: reacting MXene dispersion with epigallocatechin gallate and MgSO4; then sequentially performing ultrasonication, centrifugation, washing, and lyophilization to obtain multifunctional nanosheets MP-Mg; adding the multifunctional nanosheets MP-Mg to an aqueous solution of oxidized gellan gum for mixing to obtain solution A; mixing equal volumes of quaternary ammonium chitosan aqueous solution and carboxymethyl chitosan aqueous solution for reaction to obtain solution B; and mixing equal volumes of solution A and solution B for further reaction. The hydrogel prepared by this invention possesses injectability, photothermal responsiveness, biofilm penetration ability, synergistic antibacterial properties, and long-lasting anti-inflammatory effects, providing an innovative and practical photothermal-assisted treatment platform for the clinical treatment of periodontitis.