⑴ polylactic acid (PLA) is a novel biodegradable material, the use of renewable resources (such as corn) starch raw material proposed. Starch material made of lactic acid by the fermentation process, and then converted by chemical synthesis of polylactic acid. It has good biodegradability after use can be completely degraded by microorganisms magnessium lactate, and ultimately generate carbon dioxide and water, do not pollute the environment, which is very favorable to the protection of the environment, is recognized as an environmentally friendly material. Caring for the earth, you and I have a responsibility. World carbon dioxide emissions in 2030, according to news reports global temperature will rise to 60 ℃, ordinary plastic processing method is still burning cremation, causing a lot of greenhouse gases into the air, and polylactic acid plastic is buried in the soil degradation, resulting in carbon dioxide directly into the soil organic matter or plant uptake, do not go into the air, will not cause the greenhouse effect.
⑵ good mechanical and physical properties. Polylactic acid suitable for blow molding, thermoplastic and other processing methods, processing convenience, is widely used. Can be used for processing from industry to civilian various plastic products, packaged food, fast food boxes, non-woven, industrial and civilian cloth. Further processed into agricultural fabric, fabric care, wipes, hygiene products, outdoor anti-UV fabric, Ethyl lactate, mats surface, etc., the market is very promising.
⑶ compatibility and good biodegradable. Polylactic acid in the medical field is also widely used, such as to produce disposable infusion equipment, free split-type surgical sutures and other low molecular weight polylactic acid packaging for drug delivery agent.
⑷ polylactic acid (PLA) biodegradable plastics in addition to the basic features, but also has its own unique features. Traditional biodegradable plastic strength, transparency and resistance to climate change are not as good as ordinary plastic.
⑸ polylactic acid (PLA) plastics and petrochemical synthesis similar basic physical properties, ie it can be widely used to manufacture a variety of applications. Polylactic acid also has good gloss and transparency, and the use of polystyrene plastic film rather, is the other biodegradable products can not provide.
⑹ polylactic acid (PLA) with the most good tensile strength and elongation, polylactic acid can produce a variety of common processing methods, such as: melt extrusion molding, injection molding, blown film molding, foam molding, and vacuum forming, and widely used polymers have similar molding conditions, in addition it also has the same conventional film printing performance. So, polylactic acid can be the different needs of the industry to produce a wide range of applications.
⑺ polylactic acid (PLA) film has good air permeability, oxygen permeability, and two-carbon dioxide permeability resistance, it also has a characteristic odor isolation. Viruses and fungi easily attached to the surface of biodegradable plastic, so it is safe and hygienic concerns, however, polylactic acid is the only excellent antibacterial and antifungal properties of biodegradable plastics.
When incineration ⑻ polylactic acid (PLA), the heat of combustion of the burning of the same paper, incineration conventional plastic (such as polyethylene) in half, and incineration of the polylactic acid will not release nitrides, sulfides and other toxic gases. The body also contains lactic acid monomer present in the form, which means that products of this decomposition have security.
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