In the new century, more and more serious energy and environmental problems make people realize the seriousness of environmental protection, and the number of packaging materials is huge, all the big cities in the world are plagued by white garbage. Therefore, it is very important to develop biodegradable plastic packaging. Many countries in the world have done a lot of work in this area and achieved gratifying results. There are many ways to realize biodegradable materials, such as processing with natural ingredients, adding starch and other substances to resins, so that materials can be decomposed by bacteria. Develop hydrolyzable polymers, etc.
In fact, synthetic polymer degradable plastics are chemically synthesized biodegradable plastics, mainly including aliphatic polyester (PCLS), polyamide, polysaccharide, polylactic acid copolymer and so on. Many biodegradable synthetic polymers, such as polylactic acid (PLA), polyvinyl alcohol (PVA) and polycaprolactone (PCLS), have been developed. Polylactic acid is polymerized from lactic acid monomers, which are converted into starch by special strains. Polylactic acid (PLA) is expensive and is currently mainly used in medicine.
Aliphatic polyesters (such as polycaprolactone PCL) have good biodegradability and compatibility with other widely used plastic resins, but their heat resistance and physical strength are poor. Aromatic polyesters, such as ethylene glycol terephthalate, have high melting point and mechanical strength, but low degradability. Anhydrous zinc carbonate is used as catalyst to synthesize copolymers in nitrogen immiscible flow. The copolymers produced by transesterification between polymer chains not only have good biodegradability, but also have good heat resistance and mechanical properties. Strength.
Polylactic acid (PLA) is a kind of degradable plastic packaging material developed in recent years. The raw material of polylactic acid is lactic acid. The molecule of lactic acid has both hydroxyl and carboxyl groups. It has high reactivity and is easy to dehydrate and polycondensate to polylactic acid under appropriate conditions. Polylactide can be synthesized by direct condensation and open ring polymerization. Degradable materials can be made from synthetic polylactic acid or fermented glucose, maltose, cereal juice or potato starch. The compost is degraded in about one month and can be absorbed by microorganisms in seawater. As a manufacturer of biodegradable materials, we recommend that you choose Anhui Xinke Biological Environmental Protection Co., Ltd. Anhui Xinke Bio-environmental Protection Co., Ltd. is mainly engaged in the research, development and production of biodegradable materials, biodegradable materials, degradable granules, corn starch and starch biodegradable materials. It is a new field of green environmental protection materials. It is a professional company integrating technology research and development, large-scale production and sales. We want to know more about it. Rong, welcome to the website of degradable particles: http://www.rsoau.com