Safe biodegradable materials include natural polymer methyl cellulose, artificial polycaprolactone, polyvinyl alcohol, etc. Nature itself has the self-purification ability of dissolving, absorbing and metabolizing natural polymer methyl cellulose. The material can be degraded by the enzymes of natural microbial strains after use and discarded, and the degraded substances can be absorbed and metabolized by microbial strains as a carbon source. Next, let's take a look at the varieties of fully biodegradable materials.

P-caprolactone is a fully microbially degradable synthetic polymer with a low price at present. The polycaprolactone used is a cyclic monomer-caprolactone. Caprolactone is an aliphatic compound made by ring-opening polymerization of organometallic compounds. polyester. The main performance is that the melting point and glass transition temperature are low, respectively 60°C-60°C, and the crystallization temperature is 22°C. Its fiber strength is almost the same as that of polyamide 6 fiber. The tensile strength reaches more than 70.56cN/tex, and the nodular strength also reaches Above 44.1cN/tex, the biodegradability is similar to that of artificial fibers with little strength loss in wet state, and its products decompose into flakes that cannot be tested within about 1 week.

Polyvinyl alcohol is a biodegradable resin, and starch-based polyvinyl alcohol plastics can be completely biodegradable. The products of ethylene and modified starch-based copolymerization have good molding processability, secondary processability, mechanical properties and excellent biodegradability. Nippon Synthetic Chemical Co., Ltd. has developed a thermoplastic, water-soluble, and biodegradable polyvinyl alcohol resin, which can be melt-molded. Its melting point is 199°C, and it can be formed by extrusion, blow molding, and injection at 214°C-230°C. . The product has excellent transparency, water solubility and chemical resistance, and can be used to coat composite molded containers and packaging materials.

The main feature of lactic acid monomer is that it exists in two optically active forms. Polylactic acid technology uses its unique polymer properties to control the crystalline melting point of the product by controlling the ratio and distribution of D and L isomers in the polymer chain.

The above content is related to the varieties of fully biodegradable materials. If you want to know more about biodegradable materials, you can contact online customer service, and we will serve you wholeheartedly.