A kind of high-strength antibacterial polyethylene film and preparation method thereof

Abstract

The invention discloses a high-strength antibacterial polyethylene film and a preparation method thereof. The polyethylene film is a film formed by chemically bonding the polyethylene microporous film and the ethylene-vinyl alcohol copolymerized film with the polyethylene microporous film as the base and the ethylene-vinyl alcohol copolymerized film as the surface layer. Beneficial effects: Add pomegranate extract to increase bond strength and antibacterial properties; use water-induced reverse phase method to prepare ethylene-vinyl alcohol copolymer film as the surface layer, and utilize the synergistic effect between polyhexamethylene guanidine propionate and PVP, Accelerate the precipitation of PVP, accelerate the formation of pores, and reduce time costs; use the acidic groups in polyhexamethyleneguanidine propionate to make polyhexamethyleneguanidine propionate / metal nanoparticles move spontaneously to the membrane surface to form a hydration layer , Antibacterial and antifouling; use polyhexamethylene guanidine propionate to chelate metal nanoparticles, attach to the surface of metal nanoparticles, inhibit the agglomeration of metal nanoparticles, and increase uniform dispersion.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a high-strength antibacterial polyethylene film and a preparation method thereof. Background technique [0002] In recent years, the pollution of water bodies has become more and more severe, and the reuse of water bodies has become one of the key research topics. Among them, membrane separation technology is one of the effective methods for wastewater treatment and high-quality water purification. Traditional water treatment membranes are dominated by polysulfide porous layers, but the production process is relatively complicated, and my country is still in the exploratory stage. It is difficult to produce high-quality polysulfide through independent research and development. In recent years, the extensive research on the preparation of polyethylene membranes has led to the rapid development of polyethylene microporous membrane technology. Moreover, the membrane has go...

AI Technical Summary

Problems solved by technology

However, due to the strong hydrophobicity of polyethylene microporous membranes, long-term use in water treatment can easily lead to a decrease in mechanical capacity; there is a problem of protein pollution and adhesion causing pore blockage, resulting in membrane damage and reducing the service life of the membrane.

In addition, when polyethylene microporous membranes are used for water treatment, they are generally used as base membranes in combination with other hydrophilic membrane layers, which have the disadvantages of poor bonding strength and do not have antibacterial properties.