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可降解颗粒是否真的降解了?

可降解颗粒是否真的降解了?

来源网址:https://www.swjjkl.com/ 2022-05-17 16:19:00    

可降解是否真的降解,那我们要先了解一下,可降解的定义。可降解,是可以降解的缩写。可以降解,包含以下几类:

Whether degradability is really degradable or not, we should first understand the definition of degradability. Degradable is the abbreviation of degradable. Degradable, including the following categories:
一类,全降解,比如甘蔗渣类、纸制品类、聚乳酸PLA、聚己二酸PBAT等;二类,半降解,PE/PVC+淀粉、光降解等。我们先说一类,甘蔗渣类、纸制品,本身就是植物制品,使用过后,在自然环境,可以自动分解成无机物质,不污染环境。聚乳酸类全降解材料,也是以玉米、土豆等植物资源为原料,使用过后,在堆肥环境下,也是可以自行分解成二氧化碳、水等物质。
One is total degradation, such as bagasse, paper products, polylactic acid PLA, polyadipic acid PBAT, etc; Class II, semi degradable, PE / PVC + starch, photodegradation, etc. First of all, bagasse and paper products are plant products. After use, they can be automatically decomposed into inorganic substances in the natural environment without polluting the environment. Polylactic acid fully degradable materials also use plant resources such as corn and potatoes as raw materials. After use, they can also be decomposed into carbon dioxide, water and other substances under the composting environment.
二类,半降解,严格意义来说,应该不是降解。比如在生产过程中,向塑料PE中加入一定比例的淀粉,使用过后,塑料会在淀粉的作用下,自行分裂成小碎片或者粉末,但是塑料PE还是没有变,仍然是塑料,只是由大块变成了小块或者粉末,更加污染环境。所以,全降解是可降解,但是可降解不一定是降解产品。
Class II, semi degradation, strictly speaking, should not be degradation. For example, in the production process, a certain proportion of starch is added to the plastic PE. After use, the plastic will split into small fragments or powder under the action of starch. However, the plastic PE has not changed. It is still plastic, but it has changed from large pieces to small pieces or powder, which pollutes the environment more. Therefore, total degradation is degradable, but degradable products are not necessarily degradable products.
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