What are the benefits of degradable plastic bags?

Unpacking plastic bags leaves a lot of solid waste in public places and oceans, or remains in the soil layer of cultivated land, which seriously pollutes the living environment of human beings and becomes a worldwide public hazard. Data indicate that the amount of plastic in urban solid waste is The mass fraction has reached more than 10%, and the volume fraction is about 30%, and most of them are disposable plastic packaging and daily necessities waste.

Their pollution to the environment and the destruction of the ecological balance have attracted great attention from the society. Therefore, dealing with this problem has become a top priority in environmental protection. Generally speaking, in addition to thermal degradation of plastics, photodegradation in the natural environment and biodegradation are relatively slow, and the C14 isotope was used to track the degradation of plastics in soil.

The results show that the degradation rate of plastic varies with environmental conditions (rainfall, air permeability, temperature, etc.), but in general, the degradation rate is very slow, usually taking 200-400 years, for reasonable treatment In this regard, industrial development countries have adopted methods such as landfill, incineration and recycling to dispose of waste plastics. However, these methods have irresistible defects.

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