What Is Biodegradable Mulch Film?

Biodegradable mulch film is a new type of plastic film produced to meet the needs of society for environmental protection. Its main raw materials are a mixture of biodegradable masterbatch and plastic particle masterbatch. It can be further divided into corn starch based biodegradable film and potato starch based biodegradable mulch film. Biodegradation is achieved by utilizing the action of microorganisms in nature to degrade the mulch film.

The advantages of biodegradable mulch film mainly include:

Compared to traditional mulch film, biodegradable mulch film has many advantages, such as being able to degrade and not causing soil pollution; No need for cleaning, reducing labor and material costs; can improving soil environment and promoting microbial growth; At the same time, it can also improve agricultural yield and quality.

ㆍ Good environmental performance. Degradable plastic film is made of biodegradable materials, which can naturally degrade, reduce environmental pollution, protect soil, water sources, and the ecological environment, and avoid long-term accumulation of environmental problems.

ㆍ Low economic cost. The production cost of biodegradable plastic film is usually lower than that of traditional plastic film, and there is no need for cleaning and treatment after use, saving labor costs.

ㆍ Improve soil environment. Degradable plastic film can improve the soil environment, promote microbial growth, and promote the growth and development of crops.

ㆍ Improve agricultural yield and quality. Biodegradable plastic film has properties such as drought resistance, moisture retention, and increasing soil temperature, which helps to improve crop yield and quality.

ㆍ Reduce white pollution. Compared with traditional plastic film, the biodegradable plastic film will not remain in the soil after use, thereby reducing soil pollution and helping to solve the problem of "white pollution".

ㆍ Improve soil aeration and permeability. Degradable plastic film can increase soil aeration and permeability, which is beneficial for crop growth.

Types of raw materials for biodegradable mulch films

At present, the main raw materials for biodegradable mulch films are starch, polylactic acid, and starch polylactic acid blends.

1. Starch raw materials: Starch raw materials mainly come from plants with high starch content, such as corn, potatoes, and cassava. The advantage of starch based plastic film is its low price, but it also has the disadvantages of weak film-forming performance and mechanical strength.

2. Polylactic acid raw materials: Polylactic acid raw materials are mainly produced by fermentation of corn starch. The advantage of polylactic acid film is that its mechanical strength and film-forming performance are better than starch film, but the cost is slightly higher.

3. Starch polylactic acid blend: Starch polylactic acid blend is made by mixing starch and polylactic acid raw materials. Its advantage is that it combines the advantages of starch and polylactic acid films, and its price is relatively low.

Development trends and application prospects of biodegradable mulch film raw materials

With the increasing demand in the biodegradable mulch film market, the research and development of biodegradable mulch film raw materials has become increasingly important. In the future, biodegradable mulch film raw materials will tend towards high performance, while also having characteristics such as renewability and low-temperature processability.

At present, starch polylactic acid blends have become the mainstream product of biodegradable plastic film raw materials, but their mechanical properties still need to be further improved. With the continuous improvement of technology, the application prospects of biodegradable mulch film in agricultural production will become increasingly broad.