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What is a real biodegradable material

by:XCBIO     2021-09-06
Often heard of biodegradation, this concept will be taken seriously. I think it is because people are eager to find a solution to plastic pollution. Biodegradation seems to be a way that everyone agrees. But until now, what is a biodegradable products material, and how can this material and its products provide some help in solving plastic pollution? Next we come to understand what is a real biodegradable products material.   Really biodegradable materials must be compostable. Those that can be degraded by wind, sunlight, and rain under the action of sunlight are not real biodegradable materials. According to the definition, real biodegradable materials must be materials that are completely converted into carbon dioxide and water within 180 days through the action of microorganisms under composting conditions. The 180-day period is artificially stipulated. Why is it half a year? Because it needs to be disposed of together with kitchen waste. 300 days and 500 days are difficult to deal with, so this rule is artificially made. In fact, the degradation time of compost will vary depending on the thickness of the material. If it is a plastic film, it can be completely degraded in 350 days. If it is made into a very thick injection molded product, it may really take 180 days, or even not enough.   compostable biodegradable materials can be divided into two categories, one is bio-based compostable materials, and the other is petroleum-based compostable materials. Bio-based compostable materials can be divided into materials directly derived from plants, such as pulp, polylactic acid (PLA), aliphatic polyester (PHA), and a mixture of natural substances and the above two polymers. Petroleum-based compostable materials are derived from petroleum, such as polybutylene terephthalate (PBAT), polyethylene glycol (PCL) and so on.   compostable biodegradable materials also have disadvantages, because they rely on composting facilities, suitable conditions are 60°C (40°C-80°C) and 90% humidity. But in the natural environment, although the result can be completely degraded, it will take at least a few years. Under the conditions of low temperature, drought or inactive microorganisms, the degradation time takes longer. For example, in the north, I guess it has been buried for decades or even 500 years. Of course I haven't buried it, it's just a subjective judgment.   The above content is about what is a real biodegradable material. If you want to know more about biodegradable materials, you can contact online customer service, and we will serve you wholeheartedly.
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