Method of preparing glass with surface antibacterial property by photopolymerization

Abstract

A method of preparing glass with a surface antibacterial property by photopolymerization is disclosed. The invention relates to pretreatment of glass surfaces. Antibacterial property modification is performed by utilization of a silicone coupling agent and a photopolymerization method. The method of preparing the glass includes: hydroxylating a glass sheet in a solution comprising concentrated sulfuric acid having a concentration of 98% and hydrogen peroxide having a concentration of 30% in a volume ratio of 7:3; performing silanization to give glass surfaces a photopolymerization function; preparing a photopolymerization system of a quaternary ammonium salt photosensitive monomer; coating the silanized glass with the photopolymerization system; covering the glass with a mask; and exposing to obtain the surface antibacterial glass. The method of preparing the glass has characteristics of no need of heating, simple operation process, high efficiency, capability of achieving large-scale continuous preparation of the surface antibacterial glass, and capability of achieving control of the antibacterial specific surface area, and can be used in the fields of medical sanitary, environment protection, biotechnology, and the like.

Description

technical field [0001] The invention relates to the surface modification treatment of glass, which uses a silane coupling agent and a photopolymerization method to carry out surface antibacterial modification. Background technique [0002] With the improvement of people's quality of life, people pay more and more attention to sanitation and environmental protection. In our daily life, we are exposed to various bacteria and viruses at any time, especially in the medical industry. Therefore, people's demand for the surface of antibacterial substances is becoming more and more urgent, especially for glass products. At present, there are two main methods for people to obtain antibacterial glass: one is to add antibacterial inorganic metal salts when producing glass, and the inorganic ions with antibacterial properties dissolve in the glass to play a bactericidal effect when using glass; the other One is to modify a layer of coating with antibacterial effect on the glass surfac...

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Problems solved by technology

[0003] The inevitable disadvantage of adding antibacterial elements in the glass production process is that the antibacterial elements in the glass will continue to dissolve over time, resulting in a decline in its antibacterial effect.

There are two methods of modifying antibacterial coating on the glass surface: physical method and chemical method: patent ZL-200820084346.4 uses plasma spraying method to coat titanium dioxide nanoparticles on the glass surface, and uses nano-TiO 2 It can have an antibacterial effect on the photocatalytic degradation of most organic substances; the patent CN-103172275A introduces a method for manufacturing an antibacterial glass touch panel. First, the glass substrate is cleaned with an acidic solution and then modified with an aminosilane coupling agent. Immerse in a solution containing nano-antibacterial materials (zinc oxide, titanium dioxide, copper, gold, silver or clay). Although this method is a chemical modification of the glass surface, the binding force between the antibacterial nanoparticles and the glass surface depends on adsorption during antibacterial modification. Not a covalent bond, easy to fall off, limited service life

Joerg C. Tiller et al. grafted poly(4-vinyl-N-alkylpyridinium bromide) to the glass surface in a covalent bond to play an antibacterial role, but their method required heating at 75°C, and the reaction 24 hours, time-consuming and energy-consuming (Tiller, J.C.; Liao, C.J.; Lewis, K.; Klibanov, A.M.Proc. Natl. Acad. Sci. 2001, 98(11), 5981–5985.)

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