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可降解的塑料有哪几种?

可降解的塑料有哪几种?

来源网址:https://www.swjjkl.com/ 2022-04-01 20:04:00    

1、光降解型塑料

1. Photolytic plastics
是指在紫外线的影响下聚合物链有次序地进行分解的材料。大多数聚合物并不吸收285NM以上波长的光能,但是,如果在聚合物中加入光敏感基团或添加具有光敏感作用的化学助剂,可加速光氧化反映的过程,使之快速发生降解。
It refers to the material in which the polymer chain decomposes orderly under the influence of ultraviolet light. Most polymers do not absorb light energy with wavelengths above 285nm. However, if light sensitive groups or chemical additives with light sensitive effect are added to the polymer, the process of photooxidation reaction can be accelerated and degraded rapidly.
2、生物降解型塑料
2. Biodegradable plastics
从生物降解过程看分为完全生物降解性和生物崩坏性塑料两大类;从制备方法考虑又可分为生物发酵合成、化学合成、利用动植物天然高分子或矿物质等四种。
From the perspective of biodegradation process, it can be divided into two categories: fully biodegradable and biodegradable plastics; Considering the preparation methods, it can be divided into biological fermentation synthesis, chemical synthesis and the use of natural polymers or minerals of animals and plants.
3、光、氧化/生物全降解性塑料
3. Light, oxidation / biodegradable plastics
是结合光降解、氧化降解与生物降解等多方面降解作用,以达到完全降解的作用,它是当前世界降解塑料的主要研究开发方向之一。这种塑料在美国的研究已有了较好的成绩,在我国仍然还是一项较为困难的研究课题之一。
It combines photodegradation, oxidative degradation and biodegradation to achieve complete degradation. It is one of the main research and development directions of degradable plastics in the world. The research of this kind of plastic has made good achievements in the United States, and it is still one of the more difficult research topics in China.
4、热塑性淀粉树脂降解塑料
4. Thermoplastic starch resin degradable plastics
将淀粉分子变构而无序化,形成具有热塑性的淀粉树脂,再加入少量的增塑剂等助剂,就是所谓的全淀粉塑料。其中淀粉含量在90%以上,而加入的少量其他物质也是没毒性且可以完全降解的,所以全淀粉是完全降解塑料。
The so-called all starch plastic is that the starch molecules are allosteric and disordered to form a thermoplastic starch resin, and then a small amount of plasticizers and other additives are added. The starch content is more than 90%, and a small amount of other substances added are also non-toxic and can be completely degraded, so the whole starch is a completely degradable plastic.
以上就是为大家介绍的有关玉米淀粉颗粒的详细介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务https://www.swjjkl.com
The above is the detailed introduction of corn starch granules. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service https://www.swjjkl.com