Antibacterial plastic with high polyiodine surface and its preparation method and application

Abstract

The invention discloses a high polymeric iodine surface antibacterial plastic and a preparation method thereof. The surface antibacterial plastic is prepared by immobilization of a high polymeric iodine disinfectant to a plastic surface. The surface antibacterial plastic utilizes the material surface high polymeric iodine ion contact physical sterilization mechanism to realize the antibacterial and sterilizing purposes, and has the characteristics of safety, high efficiency, fast sterilization, no consumption and low cost, etc. The preparation method of the surface antibacterial plastic includes: adopting plastic as the substrate material, coupling filler in the plastic with an organosilicon quaternary ammonium salt, and then immobilizing high polymeric iodine ions to the substrate surface, thus obtaining the high polymeric iodine surface antibacterial plastic. The high polymeric iodine surface antibacterial plastic can be used as various packing materials for preservation and fresh-keeping of food, drugs, feed, fruits and vegetables, feed and the like. The preparation method also can be used for surface antibacterial treatment of various plastic products.

Description

technical field [0001] The invention belongs to the field of material surface antibacterial treatment and its application, in particular to a safe and efficient antibacterial plastic with high polyiodine surface and a preparation method thereof. Background technique [0002] The use of antibacterial materials for antiseptic and fresh-keeping packaging of food, fruits and vegetables, etc. can effectively improve their shelf life, among which plastic is the main packaging material. In terms of effective antibacterial ingredients added, at present, antibacterial plastics mainly include ionic type (such as silver, copper, zinc and other metal ions), nanoparticle type (such as nano-silver, nano-zinc oxide, etc.) and food preservative type. Among them, silver ions and nano-silver have strong bactericidal effect, while zinc, copper ions and their nanoparticles have poor antibacterial effect. Therefore, silver ions or nano-silver are the main antibacterial agents added in antibacte...

AI Technical Summary

Problems solved by technology

However, the above-mentioned several antibacterial plastics are obtained by blending the antibacterial agent with the plastic matrix. Therefore, there are few effective antibacterial components dispersed on the surface of the plastic, and the internal antibacterial agent has no bactericidal effect. The effective contact area between bacteria and antibacterial agent It is very small, and it takes a long time to kill bacteria, which leads to poor actual antibacterial effect. At the same time, the internal antibacterial agent without bactericidal effect not only causes waste of antibacterial agent, but also increases its production cost, so it cannot meet people's actual life. Demand for antimicrobial performance and cost of plastics

[0003] In short, the current use of antibacterial plastics has disadvantages such as high toxicity, poor bactericidal effect and high cost, which limits its application in antiseptic and fresh-keeping fields such as food, fruits and vegetables.

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