Manufacturers of degradable sheet production lines: knowledge points on degradable materials
Manufacturers of degradable sheet production lines believe that in recent years, with the rapid development of the economy, people's pursuit of material and spiritual values has become increasingly high, and the packaging of products has also been correspondingly higher. When people purchase products, they not only look at the aesthetics of the outer packaging, but also consider various other functions. Because people's pursuit of product packaging is constantly increasing, many new packaging materials are also being applied to product packaging.
The manufacturers of degradable sheet production line believe that synthetic polymer materials have the advantages of light weight, high strength, good chemical stability and low price. Together with steel, wood, and cement, they have become the four pillars of the national economy and are widely used in product packaging. However, the large amount of waste generated after its use is increasing day by day, becoming a source of white pollution, seriously endangering the environment, causing soil and water pollution, endangering human survival and health, and causing an undeniable negative impact on the environment on which humans rely for survival.
Biodegradable sheet production line manufacturers believe that biodegradable materials, also known as "green ecological materials," refer to materials that can be degraded under the action of soil microorganisms and enzymes. Specifically, it refers to polymer materials that can be biodegradable under certain conditions under the action of natural microorganisms such as bacteria, molds, and algae. The ideal biodegradable material is a kind of polymer material with excellent performance, which is completely decomposed by environmental microorganisms, and then converted into CO2 and H2O after waste, becoming a part of the carbon cycle in nature.
Manufacturers of biodegradable sheet production lines believe that the decomposition of biodegradable materials is mainly through the action of microorganisms. Therefore, the degradation mechanism of biodegradable materials is the digestion and absorption process of materials by bacteria and molds.
Firstly, microorganisms secrete hydrolytic enzymes into the body and bind to the surface of the material. Through hydrolysis, the polymer chains on the surface are cut off, generating small molecular weight compounds. Then, the degradation products are ingested into the body by microorganisms, and through various metabolic pathways, they synthesize microorganisms or convert into energy for microbial activity, ultimately converting into water and carbon dioxide. According to the chemical properties of its degradation, it can be divided into hydrolysis and enzymatic hydrolysis.
Manufacturers of degradable sheet production lines believe that the degradation of materials is essentially the process of internal polymer chains breaking into low molecular weight oligomers under specific conditions, ultimately decomposing into monomers. The "dissolution" of materials refers to the process of water-soluble small molecule substances leaving polymer materials due to molecular chain breakage, resulting in a decrease in material mechanical properties and ultimately complete disappearance. Dissolution can also be surface dissolution or overall dissolution.
Manufacturers of degradable sheet production lines believe that if the degradation rate of molecular chains is faster than the diffusion rate of water molecules in the material, the hydrolysis of chain segments is limited to the surface of the material and difficult to enter the interior of the material. This method belongs to surface erosion or uneven erosion. If the diffusion rate of water molecules in the material is faster than the hydrolysis rate of polymer segments, then both surface and internal degradation of the material occur simultaneously, thus belonging to overall erosion.