Antibacterial nano cuprous oxide/chitosan grafted polyacrylate emulsion as well as preparation method and application thereof

Abstract

The invention discloses an antibacterial nano cuprous oxide / chitosan grafted polyacrylate emulsion as well as a preparation method and application thereof. The polyacrylate emulsion is prepared from the following raw materials in parts by mass: 40 to 60 parts of methyl methacrylate, 5 to 8 parts of acrylic acid, 10 to 15 parts of a fluorine-containing acrylate monomer, 5 to 10 parts of vinyl polysiloxane, 4 to 8 parts of nano cuprous oxide, 3 to 6 parts of vinyl trimethoxy silane, 10 to 15 parts of carboxymethyl chitosan, 1 to 3 parts of polylysine, 2 to 3 parts of EDC.HCl, 0.4 to 1 part of an initiator, 50 to 60 parts of N-methyl pyrrolidone and 40 to 50 parts of deionized water. The preparation method comprises the following steps: S1, preparing modified nano cuprous oxide; s2, preparing a reaction solution I; s3, preparing a reaction solution II; and S4, preparing the nano cuprous oxide / chitosan grafted polyacrylate emulsion. According to the invention, vinyl trimethoxy silane is used for modifying nano cuprous oxide for the first time, acrylic acid reacts with carboxymethyl chitosan and polylysine to introduce C = C, and then the product is further copolymerized with other monomers, so that polyacrylate is endowed with excellent hydrophobic, oleophobic, antibacterial and self-cleaning properties.

Description

technical field [0001] The invention belongs to the technical field of polyacrylate synthesis, and in particular relates to an antibacterial nano cuprous oxide / chitosan grafted polyacrylate emulsion, a preparation method and an application thereof. Background technique [0002] Nano-cuprous oxide is a kind of monovalent copper oxide, which is mainly used in ship antifouling paints, insecticides, etc., by releasing copper ions and -SH, -COOH, -OH and other groups in proteins in fungi or bacteria and -N 2 H ground state free radicals work, leading to the death of germs. At the same time, nano-Cu 2 O is also a typical P-type narrow-bandgap semiconductor with metal vacancy. Its bandgap is 2.17eV, and its absorption limit can reach 570nm. It can effectively absorb the visible light part of sunlight. Diamond-like structure with alternately connected pyramids, Cu 3d and O 2p The orbital hybridization of Cu and the Cu inside the crystal structure 2+ The defect greatly improves...

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Problems solved by technology

However, the research on antibacterial polyacrylate materials is still relatively rare, especially "antibacterial polyacrylate synthesized with nano-cuprous oxide, chitosan, and polylysine as raw materials and acrylic monomers" has not yet been published. There are literature and patent reports or publications

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