Preparation method of atmospheric free radical trapping membrane taking natural propolis as substrate

Abstract

The invention discloses a preparation method of an atmospheric free radical trapping membrane taking natural propolis as a substrate. An ultrasonic cell smashing synchronous electrostatic spinning emulsification inclusion method is adopted, and comprises the three processes of natural propolis raw material fusing and homogenizing, electrostatic spinning emulsification inclusion and hollow microencapsulation molding in sequence. The obtained micro-encapsulated atmospheric free radical trapping membrane consists of 100 percent natural molecules, and has 100 percent trapping efficiency for gaseous free radicals; the average diameter of a micro-encapsulated fiber membrane is about 90nm; a product can be directly applied to the field of environmental ecological health such as trapping of the atmospheric free radical, monitoring and health prevention and control, or the natural propolis free radical trapping membrane can be directly applied in the field of air pollution protection such as trapping of the atmospheric free radicals in a mask, and can be applied to decorative materials such as wallpaper and glass to absorb imperceptible high-activity pollution molecules such as free radicals in the air. The atmospheric free radical trapping membrane has very high physical stability and chemical stability during use in an outdoor atmospheric pollution environment, and active molecules extracted from the natural propolis have reliable safety and have a good trapping function and removing function on air pollution active intermediates.

Description

technical field [0001] The invention relates to a preparation method of an atmospheric free radical trapping film with natural propolis as a matrix, in particular to a method for preparing a microencapsulated atmospheric free radical trapping film by ultrasonic cell pulverization and synchronous electrospinning emulsification encapsulation. Background technique [0002] There are about two hundred kinds of free radicals in the atmosphere, which widely exist in many important chemical reactions such as light and chemiluminescence. With the aggravation of air pollution and the increase of various complex pollutants, many free radicals with new structures have formed and accumulated, and most of them are adsorbed on the surface of atmospheric ultrafine particle pollutants. Free radicals are the core driving force for the formation of ultrafine particle pollutants such as atmospheric oxidation, PM2.5, and smog. However, due to the high chemical activity of free radicals, the li...

AI Technical Summary

Problems solved by technology

However, technologies such as capture, prevention, monitoring and analysis of pollutants formed by secondary transformation in the atmosphere, such as PM2.5 and free radicals with strong oxidizing properties that are difficult to observe directly, have not been well developed.

Potential atmospheric free radicals are highly active substances, which are not easy to be intuitively felt or detected by the human body, and the application of ordinary equipment is also difficult to effectively monitor, thus limiting the monitoring and prevention of such substances

At present, there is no research on the development and research of atmospheric free radical electrospinning emulsified inclusion membranes based on natural propolis. The electrospinning capture membrane prepared by natural propolis and active molecules can overcome the problem of atmospheric free radical detection, and at the same time, the natural Spinning film composed of propolis is used in mask products to protect against air pollutants and reduce free radical oxidative damage in susceptible people