Biodegradable materials include biodegradable natural polymer materials such as cellulose, starch, paper, etc., as well as biodegradable plastics obtained by biogenesis or chemical synthesis. Biodegradable plastics refer to those produced by nature under the standards of nature such as soil layer and/or sand, and/or under special conditions such as retting or anaerobic digestion or in water-soluble cell culture fluid. The function of microbial strains causes dissolution and complete dissolution into carbon dioxide (CO2) or/and methane gas (CH4), water (H2O) and acidified carbonates of contained elements and new biomass fuels (such as microbial bacteria dead bodies, etc.).

It should be noted that the dissolution of every biodegradable material, including paper, must meet certain environmental conditions. If it does not meet the dissolution conditions, especially the living conditions of microorganisms, its dissolution will be relatively slow; in addition, it is not Each biodegradable material can dissolve rapidly under all natural environmental standards. Therefore, when looking at biodegradable materials, it should be considered from its natural environmental conditions, combined with the analysis of the material's own structure to determine whether it is a biodegradable material. How to know whether a material is biodegradable or not? Our country has promulgated a series of inspection methods and regulations, which respond to the standard problem.

Three criteria must be considered for biodegradable packaging bags: first, it must be completely soluble, and the substances are carbon dioxide and water; second, it must be completely dissolved within 180 days under the industrial production of compost; third, it must not cause any toxicity after dissolution. No side effects, no harm to the environment. Biodegradable materials have been widely used in packaging bag customization. This type of packaging bag can be processed in the fertilizer processing plant and turned into soil organic fertilizer within 30-45 days. As early as the 1990s, Europe and the United States have begun to use biodegradable packaging bags and kitchen garbage bags.

In terms of biodegradable materials alone, there are actually quite a lot, such as PLA, PBS, PHA, PCL, PUR, etc., the cost base is higher than that of crude oil, but the current technology makes this difference in some products. Big, for example, Mitsui in Japan has used yeast to ferment lactic acid bacteria, which can be aggregated into polylactic acid through ring opening. However, this material cannot replace traditional crude oil in terms of habitual thinking and some characteristics. But the overall development trend is that the market share of degradable materials is getting higher and higher.

The above explanation is the composition of biodegradable materials. I hope it will be helpful to you after reading it. If you want to know more about biodegradable materials, please contact customer service online. We will wholeheartedly provide you with high-quality services !