The advantages of polylactic acid are mainly as follows:
⑴ Polylactic acid (PLA) is a new biodegradable material made of starch from renewable plant resources such as corn. Starch raw materials by saccharification to obtain glucose, and then by the glucose and a certain strain of fermentation made of high purity lactic acid, and then through the chemical synthesis of a certain molecular weight of polylactic acid. It has good biodegradability, after use can be completely degraded by microorganisms in nature, the final generation of carbon dioxide and water, do not pollute the environment, which is conducive to the protection of the environment, is recognized as environmentally friendly materials. Care for the Earth, you and I are responsible. The world's carbon dioxide emissions are reported to have risen to 60 ℃ in 2030 global temperatures, ordinary plastic treatment is still burning cremation, resulting in a large number of greenhouse gases discharged into the air, and polylactic acid plastic is buried in the soil degradation, the resulting carbon dioxide directly into the soil organic matter or absorbed by the plant, will not be discharged into the air,
Does not create a greenhouse effect.
⑵ has good mechanical and physical properties. Polylactic acid is suitable for blow molding, thermoplastic and other processing methods, easy processing, widely used. Can be used to process from the industrial to civilian plastic products, packaged food, fast food lunch boxes, non-woven fabrics, industrial and civil fabrics.
And then processed into agricultural fabrics, health care fabrics, rags, sanitary products, outdoor UV-resistant fabrics, tent cloth, floor mats and so on, the market prospects are very promising.
⑶ compatibility and biodegradability are good.
Polylactic acid in the field of medicine is also widely used, such as the production of disposable infusion equipment, detachable surgery suture, and so on, low molecular polylactic acid as drug-sustained release packaging agent.
⑷ Polylactic acid (PLA) has its own unique characteristics in addition to the basic properties of biodegradable plastics.
The strength, transparency and resistance to climate change of traditional biodegradable plastics are not as good as those of general plastics.
⑸ Polylactic acid (PLA) is similar to the basic physical property of petrochemical synthetic plastics, that is to say, it can be widely used in the manufacture of various application products.
Polylactic acid also has a good gloss and transparency, and the use of polystyrene film is equivalent to other biodegradable products can not be provided.
⑹ Polylactic acid (PLA) has the most excellent tensile strength and extension, polylactic acid can also be produced in a variety of ordinary processing, such as: melting extrusion molding, injection molding, blown film molding, foam molding and vacuum molding, and widely used polymers have similar forming conditions, in addition it has the same printing properties as the traditional film.
In this way, polylactic acid can be used in different industries to produce a wide range of applications.
⑺ Polylactic acid (PLA) film has good air permeability, oxygen permeability and two carbon dioxide, it also has the characteristics of isolating odor.
Viruses and molds are easily attached to the surface of biodegradable plastics, so there are safety and health concerns, however, polylactic acid is the only biodegradable plastic with excellent antibacterial and mildew resistance characteristics.
⑻ when incineration polylactic acid (PLA), its burning calorific value and the same as incineration paper, is the incineration of traditional plastics (such as polyethylene) half, and incineration polylactic acid will not release nitrogen, sulfide and other toxic gases.
The human body also contains lactic acid in the form of a monomer, which indicates the safety of this decomposed product.
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