Antibacterial casein-based nano ZNO composite leather finishing agent and preparation method thereof

Abstract

The present invention relates to an antibacterial casein based nano ZnO composite leather finishing agent and a preparation method thereof. The study of introduction of nano-ZnO into a casein system for preparing leather finishing agent is rarely reported. The preparation method is as below: adding casein, lye and deionized water to a three-necked flask, and heating in a water bath to obtain a casein dissolved solution; dispersing the nano-ZnO in water to obtain a nano-ZnO dispersion liquid; compounding the nano-ZnO dispersion liquid and casein dissolved solution to obtain the antibacterial nano ZnO composite leather finishing agent. According to the invention, first casein is dissolved by lye in a suitable temperature environment to obtain a casein dissolved solution; and then the nano-ZnO dispersion liquid and casein dissolved solution are compounded through a certain method to introduce ZnO nanoparticles into the casein system, so as to obtain the inorganic / casein leather finishing agent with excellent performance and excellent antibacterial properties.

Description

technical field

[0001] The invention relates to a leather finishing agent and a preparation method thereof, in particular to an antibacterial casein-based nano ZnO composite leather finishing agent and a preparation method thereof. Background technique

[0002] With the rapid development of the economy, the problem of environmental pollution is becoming more and more serious, and the development of renewable resources and the research and development of environmentally friendly materials have attracted much attention. As a natural protein, casein is a completely biodegradable renewable resource. Due to its unique film-forming properties, and the structure contains a variety of active groups, which are easy to be modified, casein film-forming substances have been widely used in leather finishing agents. However, the chemical properties of this kind of film-forming materials are unstable, and they are easily corroded by bacteria, etc., which greatly limits the development of ...

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