Discussion on Fully Degradable Materials
Advantages of PLA fully degradable material polylactic acid:
1. Fully degradable material polylactic acid (PLA) is a new type of biodegradable material that utilizes starch raw materials extracted from renewable plant resources such as corn to produce lactic acid through fermentation, which is then converted into polylactic acid through polymer synthesis. Polylactic acid has excellent biodegradability. Within one year after scrapping, it is completely decomposed by microorganisms in the soil, producing carbon dioxide and water, without causing environmental pollution. It really can 'go from nature to nature'! According to news reports, global carbon dioxide emissions will rise to 60% by 2030. The treatment method for ordinary plastics is still incineration, resulting in a large amount of greenhouse gas emissions into the air. However, polylactic acid is buried in the soil for decomposition, and the generated carbon dioxide will not directly enter the soil organic matter or be absorbed by plants, nor will it be emitted into the air, causing the greenhouse effect.
2. Good mechanical and physical properties. Polylactic acid is suitable for various processing methods such as blow molding, injection molding, and injection molding, making it easy to process and widely used. It can be used to process various food containers, packaged food, fast food lunch boxes, non-woven fabrics, industrial and civilian fabrics from industrial to civilian use. Processed from agricultural textiles, health textiles, mops, hygiene products, outdoor UV resistant fabrics, tent fabrics, floor mats, etc., the mayor/market prospects are very promising.
3. Good compatibility and degradability. Polylactic acid is also widely used in the pharmaceutical field. For example, disposable infusion tools, debonding surgical sutures, etc. can be produced, and low molecular weight polylactic acid can be used as a drug relief packaging agent.
4. The basic physical properties of fully degradable material polylactic acid (PLA) are similar to those of petrochemical synthetic plastics. That is to say, it can be widely used to create various applications. Polylactic acid also has good luster and transparency, similar to a film made of polystyrene, and is not provided for other biodegradable products.
5. Fully degradable material PLA has good tensile strength and ductility. PLA can be produced by a variety of common processing methods, such as melt extrusion molding, injection molding, blown film molding, foaming molding and vacuum forming. It has similar molding conditions as widely used polymers and has the same printing performance as traditional films. In this way, polylactic acid can be used to create various applications according to the needs of various industries.
6. The fully degradable material polylactic acid (PLA) film has good breathability, oxygen permeability, oxygen and carbon permeability, and also has the characteristics of isolating odors. Viruses and fungi can easily attach to the surface of biodegradable plastics, which raises concerns about safety and hygiene. However, polylactic acid is the only biodegradable plastic with excellent antibacterial and fungal resistance.
PLA fully degradable materials also have reliable biosafety, biodegradability, good mechanical properties and processability, and are widely used in packaging, textile industry, agricultural film, biological polymer and other fields. The disadvantage of PLA is that the decomposition conditions are relatively harsh. However, the cost of PLA in biodegradable plastic bag materials is relatively low, so PLA consumption is among the top.