At the beginning of the plastic ban, there must be a lot of kids wondering what biodegradable plastic is. What is the difference between degradable plastics and non-degradable plastics?Why do we use biodegradable plastic product? what are the advantages of biodegradable plastics?Let’s take a look at the details.
Degradable plastics refer to a kind of plastics whose properties can meet the requirements of use and remain unchanged during the shelf life, but can be degraded into substances that are harmless to the environment under natural environmental conditions after use. Therefore, it is environmentally degradable plastics.
At present, there are many new types of plastics: biodegradable plastics, photodegradable plastics, light, oxidation / biodegradable plastics, carbon dioxide-based biodegradable plastics, thermoplastic starch resin degradable plastics. Degradable plastic bags (that is, environmentally friendly plastic bags) are made of polymer materials such as PLA,PHAs,PA, PBS. The traditional non-degradable plastic bag is made of PE plastic.
Advantages of degradable plastics:
Compared with the “white garbage” plastics that can disappear for hundreds of years, under composting conditions, fully biodegradable products can be decomposed by more than 90% of microorganisms within 30 days and enter nature in the form of carbon dioxide and water. Under non-composting conditions, the untreated part of the fully biodegradable products of the waste treatment plant will gradually degrade within 2 years.
Degradable plastic bags can generally be decomposed within a year, while Olympic environmental protection plastic funnels can even begin to decompose 72 days after disposal. Non-degradable plastic bags take 200 years to degrade.
There are two main uses of degradable plastics:
One is the field where ordinary plastics were originally used. In these areas, the difficulty of collecting plastic products after use or consumption can cause harm to the environment, such as agricultural plastic film and disposable plastic packaging.
The second is the field of replacing other materials with plastics. The use of degradable plastics in these areas can bring convenience, such as ball nails for golf courses and seedling fixation materials for tropical rainforest afforestation.
With supermarkets, takeout, catering and other places have responded to plastic restrictions, actively promote the use of biodegradable plastic products, the difference between degradable plastics and non-degradable plastics and the advantages of degradable plastics are also provided to everyone.
At present, many substitutes for plastic products are still being explored.
Post time: Feb-20-2021