What does degradable plastic bag mean？

What does degradable plastic bag mean

Degradable plastic bags refer to the addition of a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) during the production process to reduce their stability and make them easier to degrade in the natural environment of plastic.

Degradable plastics are generally divided into four categories:

Photodegradable plastics: Add photosensitizers to plastics to gradually decompose them under sunlight. It belongs to an earlier generation of degradable plastics, and its disadvantage is that the degradation time is difficult to predict due to sunlight and climate changes, so the degradation time cannot be controlled.

Biodegradable plastics: Plastics that can be completely decomposed into low-molecular compounds under the action of microorganisms. It is characterized by convenient storage and transportation, as long as it is kept dry, it does not need to be protected from light, and has a wide range of applications, not only for agricultural mulch and packaging bags, but also for medical fields.

Photo/Biodegradation: A type of plastic that combines photodegradation and microorganisms. It has the characteristics of photodegradation and microbial degradation of plastics.

Water-degradable plastics: water-absorbing substances are added to plastics, which can be dissolved in water after use. They are mainly used in medical and sanitary appliances (such as medical gloves) for easy destruction and disinfection. With the development of modern biotechnology, more and more attention has been paid to biodegradable plastics, which have become a new generation of research and development hotspots.

Author Rowling

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