What is polylactic acid used for

As an important organic acid, lactic acid is widely used in food, medicine, cosmetics and other fields. Traditional lactic acid production mainly relies on fossil fuels, which will have problems of energy consumption and environmental pollution. In the face of environmental pollution, new methods of lactic acid production have been applied, such as microbial, crop product fermentation and biocatalysis technology, which can produce lactic acid more efficiently and environmentally friendly. Lactic acid is the main raw material source of polylactic acid. The polylactic acid produced by our factory is based on biological materials such as corn and crop stalks. Here is an analysis of some information about polylactic acid.

What is polylactic acid?

Polylactic acid , also known as polypropyl ester, referred to as PLA, belongs to the polyester family, is a polymer polymerized from biomass raw materials such as corn and crop straw as the main raw materials. Unilong polylactic acid production process is pollution-free, and the product can be biodegradable to achieve recycling in nature, so it is an ideal green polymer material.


Polylactic acid can be formed by the biomass renewable resources formed by the photosynthesis of plants as raw materials, about 2 tons of corn can produce 1 ton of polylactic acid, about 3 tons of corn straw, wheat grass straw can produce 1 ton of polylactic acid, inexhaustible. Polylactic acid can replace traditional petrochemical plastics and petrochemical fibers, and make fiber, film, sheet, sheet and other products, which are widely used in clothing, catering and food packaging, agriculture, automobiles, biomedicine and other fields.

Is PLA actually biodegradable?

A lot of people are concerned about the question Is PLA actually biodegradable? With the depletion of global petrochemical resources and the strengthening of environmental protection awareness in the consumer market, natural polymer materials with sustainable development characteristics are becoming more and more important, and many raw materials are changing from chemical raw materials to natural extraction raw materials. When environmental protection issues become the focus of social attention, sustainable fashion will also be a new generation wave. The birth of some new materials, such as bio-based materials, is gradually replacing environmentally unfriendly petroleum-based polymer materials, becoming the darling of major fashion brands. Polylactic acid produced by Unilong is one of the bio-based raw materials. Polylactic acid production can not only reduce production costs, but also reduce the dependence on fossil fuels and realize the recycling of resources. The main raw materials of polylactic acid are corn, straw and other crops, which can be completely degraded into carbon dioxide and water even after waste. The development of PLA production also involves process optimization and research and development of new materials to support the quality and application of PLA products. In the future, the development of polylactic acid production will make positive contributions to promoting green economy and building a sustainable society.

Why PLA is better than plastic?

Plastic has brought a lot of convenience to our lives, and many plastic products are used in our clothing, food, housing and transportation. But for plastic, many people have a common impression – not environmentally friendly. This is because the commonly used petroleum-based plastics are difficult to degrade in the natural environment, and its pollution control is also a worldwide problem. As a result, degradable plastics have gradually become a new trend. This kind of plastic converted from plant starch, the preparation process abandons environmentally unfriendly petrochemical raw materials, has excellent biodegradability, is an environmentally friendly plastic. The popularization of PLA can effectively reduce the use of non-degradable plastics, and has great significance for the control of plastic pollution.

PLA manufacturing process is more environmentally friendly than traditional plastics. It can be inferred from the chemical structure of PLA that a large number of ester bonds in the main chain of PLA are the key to its good degradation performance. Under the conditions of composting (high temperature, high humidity and microbial action), PLA can be fully degraded into H2O and carbon dioxide (CO2) in only a few months, which can be recycled through plant photosynthesis.

What Is Polylactic Acid Used For

Because of its excellent thermoformability, PLA can be processed into a variety of plastic products by extrusion molding, blister molding, film, blow molding, injection molding, fiber spinning, foaming and other methods, and has a wide range of applicability. Since PLA has so many advantages, what are the main uses of PLA?

What is polylactic acid used for?

Packaging field

PLA can be made into film products with high transparency, good barrier property, excellent processability and mechanical properties, and can be used for flexible packaging of fruits and vegetables. It can create a suitable storage environment for fruits and vegetables, maintain the life activities of fruits and vegetables, delay aging, and maintain the color, aroma, taste and appearance of fruits and vegetables.

Textile field

Polylactic acid (PLA) is a fiber product with certain strength and elasticity and other mechanical properties. At present, it has a variety of processing methods, which can be processed on cotton spinning system, wool spinning system and various new spinning equipment. The product categories include pure spinning products and blended products with cotton, wool, linen, Lycel, mudel and other fibers.

Medical field

PLA can also be used in disposable medical epidemic prevention and care products, including polylactic acid (PLA) masks, hats, shoe covers, protective clothing, pillowcases, bedspreads, pads, perforated towels, operating kits, etc.

It is also widely used in the direction of medical materials in vivo, such as absorbable screws made of polylactic acid, absorbable surgical suture threads, fiber braids or membrane materials that can be used for human tissue repair, internal fixation materials for fractures, and ophthalmic implant materials.

Polylactic acid (PLA) fiber, commonly known as “corn fiber”, has many advantages such as non-toxic, non-irritating, skin friendly, good air permeability, antibacterial and so on. It is widely used in spunbond and spunthorn non-woven products, blister and injection molding products, printing consumables and other fields. It has great potential in the application of medical PLA and PCL materials such as sutures, hemostatic clips and tissue adhesives. PLA is a kind of plant rather than petroleum, can be 100% biodegradable, can be recycled in nature, has been recognized by the industry as the most promising green environmental protection polymer material, has been widely used in biomedical and other fields. This article hopes to help you, have any questions, welcome to consult!

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Unilong®️ Group specializes in the research, development, production and operation of biological materials and green solvents. It is a high-tech enterprise integrating the research, development and production of new environmentally friendly and degradable materials.

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