PLA vs PLA+ (Plus) Filament: Key Differences in Performance and Strength

PLA vs PLA+ (Plus) Filament: Key Differences in Performance and Strength

When it comes to 3D printing, selecting the right filament is crucial for achieving desired results. PLA (Polylactic Acid) and PLA+ (PLA Plus) are two popular filament options among enthusiasts and professionals. While they share many similarities, their performance and strength can differ significantly.

Overview of PLA Filament

PLA is a biodegradable thermoplastic made from renewable resources, commonly cornstarch or sugarcane. It is favored for its ease of use, low warping, and vibrant colors. However, it has limitations, particularly in terms of strength and temperature resistance.

Overview of PLA+ Filament

PLA+ is an enhanced version of standard PLA, formulated with additives to improve its properties. This results in better strength, durability, and printability. PLA+ is designed to overcome some of the weaknesses of standard PLA while retaining many of its favorable characteristics.

Key Differences in Performance

Mechanical Properties

The mechanical properties of PLA and PLA+ can significantly influence their applications. PLA+ generally exhibits superior performance in various aspects.

• Tensile Strength: PLA generally has a tensile strength of about 50 MPa, while PLA+ can reach up to 75 MPa.
• Elongation at Break: PLA typically has an elongation at break of around 6%, compared to PLA+'s 10-15%.
• Flexural Modulus: PLA has a flexural modulus of approximately 3000 MPa while PLA+ can reach 3500-4000 MPa.

Applications

Choosing between PLA and PLA+ can depend on the intended application of the 3D printed object.

Printing Considerations

Both PLA and PLA+ require specific printing conditions for optimal results. Below are some considerations:

• Print Temperature: PLA is typically printed between 190°C and 220°C, whereas PLA+ may require a slightly higher range of 210°C to 230°C.
• Bed Temperature: A heated bed is not necessary for PLA, but for PLA+, a bed temperature of around 50-60°C can help improve adhesion.
• Print Speed: Both filaments can be printed at similar speeds, but PLA+ may require a slower speed for better layer adhesion.

Environmental Considerations

Both PLA and PLA+ are derived from renewable resources, making them more environmentally friendly than many other filament types. However, there are some differences:

• Biodegradability: PLA is completely biodegradable under industrial composting conditions, while PLA+ may not decompose as readily due to the additives used in its formulation.
• Carbon Footprint: Both filaments have a lower carbon footprint compared to traditional plastics, but the production process for PLA+ may have a slightly higher impact due to the additional materials involved.

Conclusion

In summary, PLA and PLA+ serve different purposes in the realm of 3D printing. While standard PLA is ideal for easy printing and aesthetic applications, PLA+ offers enhanced strength and durability for functional parts. Understanding the key differences in performance, mechanical properties, and applications can aid in making an informed decision when selecting the appropriate filament for a specific project.

Frequently Asked Questions

What are the main advantages of using PLA over PLA+?

PLA is easier to print and generally more affordable, making it a great choice for beginners and simple projects. It also produces high-quality prints with excellent detail.

Can PLA+ be printed on the same settings as PLA?

While PLA+ can be printed at similar settings, it is often recommended to increase the nozzle and bed temperatures slightly to achieve optimal results. This helps improve adhesion and print quality.

Is PLA+ biodegradable like standard PLA?

PLA+ retains some biodegradable characteristics, but its enhanced formulation may reduce its overall biodegradability compared to standard PLA. It's important to check the manufacturer's specifications.

Which filament is better for outdoor applications?

Neither PLA nor PLA+ is ideal for outdoor applications due to their susceptibility to UV light and moisture. For outdoor use, consider materials like PETG or ASA.

Will using PLA+ affect the print speed?

Using PLA+ may require slightly slower print speeds to ensure proper layer adhesion and avoid defects. Testing different speeds can help find the optimal setting.