How is the degradation of biodegradable non-woven fabric carried out?

The degradation of biodegradable non-woven fabric is a topic of great concern, which involves the life cycle management of environmentally friendly materials and an important method of reducing plastic pollution. With the increasing concern about environmental issues, we urgently need to understand the degradation process of biodegradable nonwoven fabric in order to better utilize these materials and reduce the adverse impact on the environment.

How is the degradation of biodegradable non-woven fabric carried out?

Biodegradable materials

Biodegradable non-woven fabrics are usually made of biodegradable materials such as starch, polylactic acid (PLA), polyhydroxy fatty acid ester (PHA), etc. These materials can be degraded by microorganisms in the natural environment. The decomposition process begins with microorganisms adhering to the surface of the non-woven fabric, then secreting enzymes to break down polymer chains.

Natural decomposition speed

The natural decomposition speed of biodegradable non-woven fabric depends on multiple factors, including the type of material, environmental conditions (such as temperature, humidity, and oxygen levels), microbial activity, etc. Generally, a warm and humid environment can help accelerate decomposition, while a dry and cold environment can slow down the decomposition rate. Under ideal conditions, biodegradable materials can completely decompose within a few months to a few years.

Photodissociation

Photodegradation is a process of breaking down biodegradable non-woven fabrics, in which ultraviolet light can break down the molecular bonds in the material and break them down into smaller fragments. This process usually requires exposure to sunlight outdoors, and different types of biodegradable non-woven fabrics are sensitive to photodegradation to different degrees.

Wet degradation

Some biodegradable non-woven fabrics break down in wet environments. Wet degradation is usually accelerated by the action of water molecules. Water can penetrate the material, break down molecular bonds, making it fragile, and eventually break down into smaller fragments.

Microbial degradation

Microorganisms play a key role in the decomposition process of biodegradable non-woven fabrics. They break down the organic matter in the material and convert it into simpler substances such as carbon dioxide, water, and organic waste. This process usually occurs in soil, compost piles, and natural water bodies and requires appropriate temperature, humidity, and microbial activity.

Decomposition products

The decomposition of biodegradable non-woven fabric eventually produces water, carbon dioxide, and organic residues. These products usually do not cause pollution or harm to the environment.

The decomposition of biodegradable non-woven fabrics is an important aspect of environmental protection and sustainable development. By gaining a deeper understanding of the decomposition mechanism and influencing factors, we can better manage and utilize these materials, reduce plastic pollution, and reduce dependence on harmful plastic waste. Through continuous scientific research and environmental education, we can work together to promote more environmentally friendly and sustainable material choices and contribute to the future of the Earth.