The white pollution situation is not optimistic. New film materials solve the problem of plastic degradation

【Hot attention of Chemical Machinery Equipment Network】Since its inception, plastic products have quickly occupied major markets by virtue of their convenience, low price, wide range of uses, and multiple benefits, and they have become a necessity in people's production and life.
Especially with the acceleration of people's daily life, social life is developing in the direction of convenience and sanitation.
The development needs of the times have further promoted the development and prosperity of the plastic products industry.
As a result, disposable foam plastic lunch boxes, plastic bags, chopsticks, water cups and other plastic products have frequently entered people's daily lives, and the output and use of plastic products have continued to expand.

 

According to statistics, the growth rate of plastic packaging materials in the world market is higher than that of other packaging materials.
The average annual growth rate of plastic packaging materials from 1990 to 1995 was 8.
9%.
my country is one of the countries that produce and consume plastic products in the world.
Plastic products are not only large in output, but also high in consumption.
For example, in 1995 alone, my country's plastic production reached 5.
19 million tons, and nearly 6 million tons of plastics were imported.
According to estimates, the total plastic consumption in the country was about 11 million tons, of which 2.
11 million tons were used for packaging.
Most of these packaging plastic products are discarded in the environment in the form of waste films, plastic bags and foam tableware, which inevitably brings a series of environmental pollution problems, and "white pollution" comes from this.

 

　　In addition to affecting the visual aesthetics of cities, scenic spots and other places, the randomly discarded plastic waste has potential harm to the ecological environment that cannot be ignored.
For example, in recent years, there have been endless incidents of suffocation and death due to the input of a large amount of difficult-to-degradable plastic waste from land to the sea, causing marine organisms to eat the waste by mistake; a large number of difficult-to-degradable plastic waste buried in the soil affects the absorption of nutrients and water from crops; The leakage of chemical components in the product can cause groundwater pollution; garbage incineration pollutes the air and harms human health.

 

　　Not only that, a large amount of plastic waste is easily transformed into microplastic waste that is difficult to detect with the naked human body under the influence of the environment.
These tiny plastic particles greatly increase the difficulty of environmental governance.
At this point, the "white pollution" treatment cannot be delayed.
In addition to the treatment of existing plastic pollution, scientific and technological breakthroughs are needed.
Before plastic products are replaced, materials that are degradable and relatively less harmful to the environment should be developed, and strive to start from the source.
Control plastic pollution.

 

　　Recently, the team of Academician Yu Shuhong of the University of Science and Technology of China has developed a new type of degradable new film material.
This material is not only superior to ordinary plastics in terms of toughness, light transmission, and high temperature resistance, but it is also buried in the soil.
It is degraded and pollution-free in about months.

 

　　Further understanding, the research and development of this new material is inspired by shells that are well-known to the public.
Shells are calcifications formed by secretions of a special gland cell of mollusks that protect the soft parts of the body.
Compared with the naturally occurring calcium carbonate minerals in nature, shells have a unique multi-scale, multi-level "brick-mud" assembly structure.
This special structure is an important reason for its good toughness and high strength.
Inspired by this, the research team used the two natural components of nano-clay sheet and bacterial cellulose to imitate the shell structure and combined with aerosol-assisted biosynthesis to develop this new type of film material.

 

　　In addition to the strong structure and strong toughness, the degradable material of the film material is also a highlight.
According to reports, bacterial cellulose is a natural substance secreted by bacteria after swallowing glucose.
Combining this substance with nano-clay tablets, its performance is not only stronger, but also degradable, and has no pollution to the natural environment.

 

　　At present, the scientific research team is actively promoting the application and industrialization of this new thin film material.
It is believed that in the near future, this new material can be used in the production of plastic products on a large scale.
By then, "white pollution" may become history.

 

　　Original title: White pollution situation is not optimistic, new film materials solve the problem of plastic degradation