PLA Luminy® L175

Alternative and trade names
Polylactic acid, PLA
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Description

PLA is a biobased polymer derived from natural resources and offers a significant reduction in carbon footprint compared to oil-based plastics. Luminy® L175 is a high heat, high viscosity, PLA homopolymer suitable for film extrusion, thermoforming or fiber spinning. Compared to standard PLA, these PLA homopolymers have higher melting points and an increased rate of crystallization. As a result, compounds containing PLA homopolymers are suitable for the production of semicrystalline parts, which exhibit a higher temperature resistance.


Stereochemical purity: min. 99% L-isomer using Total Corbion PLA method


Biobased content: Luminy® L175 has a biobased content of 100% (confidence level 1) and a biobased carbon content of 100% according to EN 16785-1 under certificate number DIC-00001. Luminy® L175 is certified 100% biobased according to ASTM D6866 under the USDA Biopreferred program.


Datasheet includes typical properties, not to be interpreted as specifications

This material data has been provided by Total Corbion.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueComment

Bio-based content

100.0 %

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ASTM D6866, EN 16785-1

Density

1.24 g/cm³

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Literature value

Residual monomer

0.30000000000000004 mg/kg

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Total Corbion PLA method

Water content

0.04 %

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max., Coulometric Karl-Fischer

Mechanical

PropertyValueComment

Elastic modulus

3.5 GPa

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ISO 527-1

Elongation

5.0

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ISO 527-1

Impact strength, Charpy notched

5.0

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ISO 179-1eA

Tensile strength

50.0 MPa

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ISO 527-1

Thermal

PropertyValuePressureComment

Glass transition temperature

60.0 °C

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DSC

Heat deflection temperature

60.0 °C

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0.45 MPa

ISO 75-1 for amorphous & 150°C for crystalline

Melting point

175.0 °C

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DSC

Rheological Properties

PropertyValueComment

Melt mass-flow rate

8.0 g/10min

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ISO 1133-A @ 210°C/2.16kg & 3 g/10 min @ 190°C/2.16kg

Technological properties

Property
Application areas

PLA extruded filament for FDM/FFF 3D printing, single-serve capsules for coffee machine, injection molded serviceware, food serviceware

Certifications

FOOD CONTACT STATUS: In the European Union, Luminy® PLA polymers are compliant with EU commission regulation 10/2011 of 14 January 2011 (and amendments) on plastic materials and articles intended to come into contact with food. Lactic acid is considered a dual use substance, since lactic acid is approved as a food additive (additive number E270). There are no SMLs or SML(T)s for the ingredients used to produce Luminy® PLA. The regulation does include an migration limit of 10 mg/dm2 on the overall migration from finished plastic articles into food. It is the responsibility of the manufacturer of the final product, when intended as a food contact product, to determine that the use of the product is safe and also suitable for the intended application. While it is Total Corbion PLA’s conclusion that the above mentioned polymers are permitted, it is the final product which must meet the given regulations and the manufacturer should take responsibility to check if the final product is in compliance with these regulations.


In the United States of America, Luminy® PLA as supplied by Total Corbion PLA has been evaluated and was found to be suitable for use in food contact applications. On 30 November 2018, FCN 001926 as applied for by Total Corbion PLA to the FDA became effective. It is included in the list of effective notifications for FCNs on the website of the FDA. The evaluation performed was in line with the requirements of Section 201(s) and Section 409 of the Federal, Drug and Cosmetic Act, and Parts 182, 184 and 186 of the Food Additive Regulations. Luminy® PLA neat resin is approved for all food types and conditions of use B through H.


Color

Crystalline White

Other

NOTICE REGARDING USE RESTRICTIONS: Unless specifically agreed to in writing, Total Corbion PLA will not knowingly market any product into any of the following commercial or developmental applications:

  • bottles or preforms, unless specific arrangements on recycling and end-of-life are in place
  • microbeads used in personal care products, including without limitation, cosmetics or over-the-counter drugs
  • components of products intended for human or animal consumption
  • any application that is intended to be used inside the human body.
  • Processing methods

    PLA homopolymers can be processed on conventional extrusion equipment and can be used as neat resin or as part of a compound to further optimize overall material properties. It is recommended to use a general purpose screw with L/D ratios between 24 and 32. Pre-drying of the resin is recommended.


    Start-up and shutdown:

  • Purge the system with a polyolefin or a purging compound (e.g. Dyna-Purge, Clean LDPE) at its recommended temperature settings.
  • Purge with PLA resin or PLA compound until stable processing is obtained free of contaminants.
  • Reset the temperature settings to the recommended purging compound temperature profile.
  • Purge with a polyolefin or a purging compound for 5 times the average residence time. After completion of the run, PLA must be removed from the whole system. PLA can degrade into lactic acid causing corrosion of the equipment (e.g. die plates).

  • Typical settings, may require optimization:

  • Predrying 4-6 hours at 100°C
  • Feed zone 20-40°C
  • Melt zone 180-190°C
  • Mixing & conveying 190-210°C
  • Die head temperature 190-210°C

  • MOISTURE & PRE-DRYING: It is recommended to dry Luminy® L175 from the packaging for 4-6 hours at 100°C. Drying of semi-crystalline PLA homopolymer can be performed in a desiccant hot air dryer, with a dew point of -40°C or less. It is recommended to reduce the moisture content before melt processing to a level less than 250ppm and preferably less than 100 ppm, measured by e.g. Karl-Fischer or Brabender aquatrac method. Predrying is in particular important prior to injection molding, film and sheet production. Moisture causes hydrolysis of the PLA homopolymer during melt processing, resulting in reduced mechanical performance in the final part.