Science and technology help the ecological protection of the Yellow River Basin to solve the problem of "white pollution" with fully biodegradable plastic film

China Shandong Net-Sensing Shandong, June 22.
The mulch film is a film blown from polyethylene.
The thin film has the functions of increasing temperature, maintaining moisture, weed control, and pressing salt, which improves the growth environment of crops.
, increasing the grain output per unit area
.
Agricultural mulch film has been widely used in agricultural production, but the use of mulch film is not all benefits.
While increasing production and efficiency, ensuring the production of grain, vegetables, and economic crops, the side effects of extensive use of mulch film have begun to appear.
This is the "white color" of mulch film.
pollution"
.

Shandong Longchang Plastic Industry Co.
, Ltd.
, a "National High-tech Enterprise", a "Specialized, Specialized and New" Enterprise in Shandong Province, and a Gazelle Enterprise in Jining City, is a self-operated import and export enterprise of agricultural film located in Liangshan Economic Development Zone.
The company is a limited liability company dedicated to the research, development, manufacture and sales of fully biodegradable films, functional agricultural films and industrial films
.
As a local company born and raised in Liangshan County, it has always made its own contribution to the ecological protection of the Yellow River Basin
.

"Traditional film takes a long time to degrade, and directly discarding it in the field will not only endanger the air and water sources, but also have an irreversible and profound impact on the soil environment
.
At the same time, due to insufficient understanding of the recycling of residual film by farmers, manual picking costs are high.
The reason is that it is very difficult to recycle the plastic film
.
" Xu Changkun, the company's head, told reporters that traditional film has caused many farmers to suffer, and the residual plastic film in the soil will damage the soil structure
.
Due to the characteristics of large amount of plastic film and less recycling, it has become a prominent problem in green development in some areas
.

In 2017, the national standard "Fully Biodegradable Agricultural Ground Cover Film" (GB/T35795-2017) was officially promulgated and implemented
.
Xu Changkun saw the meaning behind this new standard.
He and the School of Chemical Engineering of Shandong University of Technology established a joint research and development center for new materials of production, education and research, inviting experts to conduct research together.
After numerous explorations and experiments, finally, the fully biodegradable plastic film was officially Enter the stage of production, promotion and use
.
"As a Liangshan native who grew up drinking the Yellow River water, I must be very excited to see that my products can help green development and contribute to the control of white pollution in Liangshan County and even the whole country
.
" Xu Changkun still clearly remembers the mood at that time
.

It is understood that this fully biodegradable mulch film is prepared from biodegradable materials as raw materials, produced by blow molding, and has fully biodegradable properties
.
The company developed a national invention patent for "a degradable mulch film adapted to different environments and its production method", which can synthesize biodegradable mulch film raw materials such as corn extract products through raw material modification, etc.
, and the final batch production
.
The fully biodegradable plastic film produced by the company can be customized according to the climate, crop type and effective coverage period of the planting area.
The degradation period of this film can be controlled between 3-5 months according to planting needs
.
"If you explain the principle, that is, after microorganisms such as bacteria, fungi and actinomycetes erode and degrade the film, under the action of light and mild microbial decomposition, the polymer components are hydrolyzed, ionized or protonated, mechanically destroyed, and split into oligomers.
The enzymes secreted by fungi or bacteria decompose or oxidatively degrade water-soluble polymers into water-soluble fragments, generate new small molecular compounds, and finally decompose into carbon dioxide and water or methane
.
" Xu Changkun told reporters that this kind of full biodegradation The plastic film does not need to be recycled at all, and it will not pollute the environment after being degraded into carbon dioxide and water
.

As a national high-tech enterprise, Longchang Plastics has never stopped in the exploration of technological innovation
.
The reporter saw in the company's research and development center that a new product called special functional agricultural film is undergoing experiments
.
The technician told reporters that this film destroys the growth environment of the pests by changing the spectrum required by the pests in the vegetable greenhouse to achieve the purpose of removing insects and reducing the use of pesticides.
It absorbs light from top to bottom and filters harmful light waves, thereby greatly improving the growth and yield of crops and avoiding the extensive use of chemical fertilizers
.
"In addition to reducing the use of fertilizers and pesticides, the company is advancing a recycling program for this film
.
When the customer's film expires, our company recycles it and reprocesses it into industrial or packaging film to increase the use of plastic.
rate and further reduce environmental pollution
.
”