Antibacterial film with PVDF-HFP (Polyvinylidene Fluoride-Hexafluoropropylene) as substrate and blended nanofiller as well as preparation method and application of antibacterial film

Abstract

The invention provides an antibacterial film taking PVDF-HFP as a substrate and blended with nanofiller as well as a preparation method and application of the antibacterial film, and relates to the technical field of chemical composite materials. The preparation method specifically comprises the following steps: by taking polyvinylidene fluoride-hexafluoropropylene as a matrix and nanoparticles as a filler, blending to prepare a flexible piezoelectric antibacterial film; wherein the nanoparticles comprise one or more than two of a metal oxygen compound, a carbon-based nano material and a cationic polymer. The filler nanoparticles used in the invention have relatively low toxicity to eukaryotic cells, have good biological safety and are harmless to organisms, so that the filler nanoparticles can be widely applied to the fields of water pollutant degradation sterilization, medical and daily necessity sterilization and disinfection, antibacterial product preparation and the like, and have the characteristics of safety, high efficiency and broad-spectrum antibacterial property. Moreover, the preparation method is simple in preparation process, short in period, high in safety, environment-friendly, pollution-free and high in repeatability, has no specific requirements on production environment and equipment, and can realize large-scale batch production and preparation.

Description

technical field [0001] The invention belongs to the technical field of chemical composite materials, and in particular relates to an antibacterial film using PVDF-HFP as a substrate and blending nano fillers, a preparation method and application thereof. Background technique [0002] The global escalation of bacterial resistance to traditional medical antibiotics is a serious challenge facing modern society. The high prevalence of multidrug-resistant bacteria among bacteria reduces the effectiveness of treatments and leads to thousands of deaths. It is an urgent task for scientific researchers to develop new antibacterial materials that will not cause bacterial drug resistance and be used in the fields of industry, environment, daily necessities, food and biomedicine. [0003] There are four types of traditional antibacterial materials and antibacterial mechanisms as follows. The first category is antibiotics and various organic molecules, including natural antibacterial m...

AI Technical Summary

Problems solved by technology

These organic preparations often lead to the increase of bacterial resistance, and some macromolecules, such as enzymes and peptides, are unstable and prone to failure

The second class of antibacterial agents includes metal antibacterial agents and inorganic antibacterial agents, including peroxides, oxides, etc., but heavy metal ions with antibacterial effects in these substances are also cytotoxic, and their release is uncontrolled, which is likely to cause damage to the environment and ecology. or human toxicity

The fourth type of antibacterial agent is antibacterial material based on photodynamic therapy. These materials are often used for antibacterial treatment in vivo. The antibacterial mechanism is to generate active oxygen species, interfere with the metabolism of bacteria, and cause bacterial death; The potential side effect is that the heat generated by exposure to light can damage healthy tissues

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