PLA (Polylactic Acid): Definition, Applications, and Different ...

Which is the Best Type of PLA?

The best type of PLA depends on the specific requirements of the application. For example, if you are looking for the strongest type of PLA, PLA+ is the best option. If a high rate of biodegradation is required then PDLLA should be used. For longer-term biocompatibility, PLLA is preferred. However, PLLA is the most commonly used grade of PLA and has a good balance between properties and cost. 

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Which PLA is the Strongest?

PDLA and PLLA are both semi-crystalline and therefore have stronger intermolecular bonds when compared to the amorphous PDLLA. As such, the strongest forms of PLA are PDLA and PLLA which have the same properties but just different molecular structures. PLA+ is basically PLLA with some additional proprietary additives that improve the material toughness and is regarded as the strongest form of PLA, especially in 3D printing applications.

How is PLA Used in 3D Printing?

PLA is used as filament in 3D printing. PLA  raw material is formed into a plastic filament with a diameter of either 1.75 or 2.85 mm. This filament is fed into a heated extruder which forces the molten plastic through a nozzle, to build the part up layer by layer. PLA does not require a heated print bed, and its extruder temperature is typically set between 190 and 220 °C. PLA filament is easy to use and has little tendency to warp during the printing process.

Is PLA Compatible With 3D Printing?

Yes, PLA is compatible with 3D printing. In fact, PLA is one of the most commonly used plastics in FDM (Fused Deposition Modeling) due to its ease of use.

For more information, see our guide on 3D Printing.

What is the Difference Between PLA and PLA Plus?

PLA Plus or PLA+ is generally tougher than PLA, meaning that it is not as brittle as standard PLA. The exact chemical difference between these two depends on how the various PLA plastic companies define the term PLA+ since there is no formal definition for it. Many different additives are used in standard PLA and then called &#;PLA Plus.&#;

Summary

This article presented PLA (polylactic acid), explained what it is, and discussed its applications and different types of it. To learn more about polylactic acid, contact a Xometry representative.

Xometry provides a wide range of manufacturing capabilities, including 3D printing and other value-added services for all of your prototyping and production needs. Visit our website to learn more or to request a free, no-obligation quote.

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Disclaimer

The content appearing on this webpage is for informational purposes only. Xometry makes no representation or warranty of any kind, be it expressed or implied, as to the accuracy, completeness, or validity of the information. Any performance parameters, geometric tolerances, specific design features, quality and types of materials, or processes should not be inferred to represent what will be delivered by third-party suppliers or manufacturers through Xometry&#;s network. Buyers seeking quotes for parts are responsible for defining the specific requirements for those parts. Please refer to our terms and conditions for more information.

Today&#;s serious environmental problem has generated in our society the need to find a new model of production and consumption that is more responsible with the planet. Among others, waste generation has been one of the causes that has led to the fact that today we have to face the problems of climate change.

In response this situation, alternative materials to conventional plastic have appeared that can play a fundamental role in the transition to a circular economy.

• Recommended learning: The role of plastic in the circular economy

PLA is one of those environmentally responsible alternatives that the thermoplastics sector uses to combat environmental problems.

This material is given its name because its main component is polylactic acid. The thermoplastic polymer is obtained from the fermentation of vegetables such as corn, cassava or sugar cane, among others.

El PLA es una de las alternativas responsables con el medioambiente que el sector de los termoplásticos utiliza para combatir a los problemas ambientales.

In addition, PLA plastic is a polyester and consists of lactic acid units. This acid is soluble in ether, syrupy and colorless.

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