Modern human civilization can be said to be based on fossil energy. But in recent years, with the depletion of these non-renewable resources, people will face an energy crisis in the foreseeable future. On the other hand, people also suffer from the pain they bring, such as serious air pollution, white pollution and so on. In order to solve these problems, people began to turn to new fields, one of which is biodegradable particles.
The emergence of biodegradable materials has broken the traditional impression that plastics = 10,000 years ago) = pollution. As the name implies, degradable materials can be degraded into small molecules under certain conditions after a certain period of time. According to the degradation mechanism, it can be divided into three categories: photodegradable materials, biodegradable materials and photobiodegradable materials.
How much do you know about biodegradable particles?
In the early stage, degradable components or photosensitizers, such as starch, were added to traditional plastics without affecting their functions. Under natural conditions, biodegradable components are degraded first, thus destroying the whole product structure, which is not only conducive to reducing the "flying all over the sky" of plastic bags, but also conducive to accelerating the degradation of refractory components. But this material is not completely degradable, and it may take a long time to degrade completely.
Now, some completely degradable materials can replace or are replacing traditional engineering plastics. Next, we will introduce some biodegradable materials that we can contact in our daily life.
First, starch-based plastics. Starch-based plastics are the most common biodegradable materials in our lives, such as disposable tableware. If you have the right tools, its main ingredient, starch, can also be made from starch in your kitchen.
Second, polylactic acid (PLA). You may not have heard of polylactic acid, but we all know about lactic acid. Everyone knows how painful your body is after strenuous exercise. Polylactic acid is a polymer formed by dehydration of hydroxyl and carboxyl groups in lactic acid. Polylactic acid has no pollution in the whole production process. Its performance is similar to many engineering plastics and has good compatibility with organic matter. Therefore, PLA is widely used in traditional packaging, automotive industry (door, rim, seat, etc.), electronic industry (CD, mobile phone case, etc.). At present, there are many kinds of products, such as surgical suture, drug relief packaging, artificial fracture internal fixation materials, etc.
Thirdly, polyhydroxyalkanoate (PHA) - this should be a new word. PHA is a kind of polymer formed in microorganisms and a natural macromolecule biomaterial. In recent years, it has become a research hotspot of biological functional materials. Compared with other degradable materials, PHA can change its composition by controlling the strain and fermentation process. PHA can be as hard as engineering plastics or as soft as rubber. This tremendous diversity has made it more widely used and become a research hotspot of biodegradable materials in recent years.
These completely degradable materials, which are completely independent of fossil fuels, are of great significance in alleviating the energy crisis. However, without fossil fuels, the raw materials mainly depend on food and microorganisms, which are more expensive than traditional fossil fuels and are difficult to be used on a large scale. On the whole, not all degradable materials meet the standard of Engineering plastics, and the processing technology needs to be improved. Therefore, the popularization of biodegradable materials still has a long way to go.
These are the related contents of biodegradable particles manufacturer for you. For more information, please visit the website: http://www.rsoau.com.