due to biologicalThe application of degradable PLA stics in the high-end market mainly includes medical supplies, drug slow-release materials,3Dprinting materials, etc. and PLA ,PCL,PHAsSuch biodegradable PLA stics have good biocompatibility, and can realize the controllability of performance through molecular design during synthesis, so they have development potential in the high-end market. 1, polylactic acid ( PLA )Polylactic acid is a polymer obtained by polymerizing lactic acid as the main raw material, and it is a commercialized bio-based degradable PLA stic.The main raw material lactic acid is obtained from cornstarch, and can also be made from sugar beets or grains to reduce costs. The raw materials for the production of polylactic acid are abundant and renewable, the production is pollution-free, and the product can be biodegraded.Polylactic acid has good biosolubility, bioabsorbability and good solvent resistance, and can be processed in various ways, such as blown film, extrusion molding, etc.Polylactic acid also has good flame retardancy and antibacterial properties, and among degradable thermo PLA stic polymers, PLA It has the best heat resistance, so it can be melt-spun with conventional processing technology without special equipment and operation technology. 2, polycaprolactone (PCL)Polycaprolactone is an aliphatic linear polyester that is compatible with PLA Different, it is a commercialized bio-based degradable PLA stic, which is very soft, has great ductility, and has excellent biocompatibility, memory, and biodegradability. It is widely used in various fields, especially It’s medical.Polycaprolactone is soft, easy to process, and has excellent performance. It is often used as tissue engineering scaffold material in the medical field and can be absorbed and excreted by the human body. 3,PHAs PHAsBiodegradable PLA stics are produced by bacterial fermentation, which can be used as intramolecular carbon sources and energy reserves, and become granules that accumulate in the cyto PLA sm.The fermented product is mainly carbohydrates such as glucose. Different fermentation conditions can produce different types ofPHAs.becausePHAsExpensive price and good biocompatibility, PHAsIt is more used in the medical field.Examples include medical sutures, repair devices, repair patches, bandages, cardiovascular patches, guided tissue repair, scaffolds for articular cartilage repair, nerve conduits, tendon repair devices, artificial esophagus, and wound dressings.In short, in the next few years, the market demand for biodegradable PLA stics will grow rapidly, and it is expected that by2020The total global demand for biodegradable PLA stics will reach322About 10,000 tons, the average annual growth rate of demand exceeds16%.due to biodegradable PLA stics are widely used and have great value in medical treatment, production and manufacturing. Therefore, it is an effective solution to vigorously develop biodegradable and environmentally friendly PLA stic industries.”White pollution”problems, avoiding the hazards of PLA stic and its cancer risks, and the best ways to protect the environment.
- The difference between biodegradable bags and ordinary PLA stic bags January 30, 2023